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Two small spacecraft currently traversing the void between Earth and Mars are rewriting the playbook for how robotic missions reach the Red Planet. NASA’s ESCAPADE mission, comprising twin spacecraft nicknamed Blue and Gold, launched aboard a Blue Origin New Glenn rocket in November 2025, but they will not arrive at Mars until September 2027. This unusual trajectory represents a deliberate choice to wait for optimal planetary alignment, demonstrating how small spacecraft can offer flexibility that larger missions cannot match.

The ESCAPADE twins carry instruments designed to investigate one of Mars’ most enduring mysteries: how the planet lost the thick atmosphere that scientists believe once permitted flowing water on its surface. Researchers have long suspected the solar wind, a constant stream of charged particles emanating from the Sun, played a central role in stripping away the Martian air over billions of years. The ESCAPADE spacecraft will observe this process directly, measuring how solar wind interacts with Mars’ magnetic field and causes atmospheric gases to escape into space.

What makes the current phase of the mission particularly intriguing is the bonus science the spacecraft are conducting while awaiting their Mars arrival. As of February 2026, both spacecraft have activated their science instruments and are collecting data on Earth’s distant magnetotail, the region of our planet’s magnetic environment that extends away from the Sun. This region has never been studied at such distances, giving scientists their first opportunity to observe how Earth’s magnetic field behaves in the outer reaches of its influence.

The twin spacecraft approach represents a first for Mars exploration. Previous missions to the Red Planet have relied on single spacecraft, limiting observations to one location at any given time. ESCAPADE will provide what mission scientists describe as a stereo perspective, allowing them to observe cause and effect relationships in the Martian magnetosphere from two different vantage points simultaneously. When one spacecraft measures the incoming solar wind while the other measures the planet’s response, researchers can connect these observations to understand the fundamental processes governing atmospheric loss.

The mission’s principal investigator, Rob Lillis of the University of California, Berkeley, has emphasized how the dual-spacecraft configuration enables measurements impossible for single platforms. By observing identical regions at slightly different times, the spacecraft can detect how the Martian magnetosphere changes on timescales as short as two minutes. This temporal resolution will reveal dynamics that previous Mars missions could never capture, potentially answering questions that have puzzled scientists for decades.

Once the spacecraft arrive at Mars in 2027, they will spend approximately six months in complementary orbits before beginning their primary science mission in spring 2028. One spacecraft will remain closer to the planet while the other travels farther away, allowing simultaneous measurement of both the upstream solar wind and the planet’s magnetospheric response. This configuration mirrors the approach used by missions studying Earth’s space weather but represents a first at Mars.

Understanding Mars’ lost atmosphere requires grasp of several interconnected physical processes. The solar wind consists primarily of protons and electrons traveling at speeds typically between 300 and 800 kilometers per second, carrying the Sun’s magnetic field outward through interplanetary space. When this magnetized plasma encounters Mars, it interacts with the planet’s weak magnetic environment, transferring energy and momentum to charged particles in the upper atmosphere.

Mars lacks Earth’s global magnetic field, which shields our planet by deflecting solar wind around the planet like a stone diverting a stream. Instead, Mars possesses scattered regions of remnant magnetization in its crust, along with a dynamically generated magnetic field created when solar wind interacts with charged particles in the ionosphere. This hybrid magnetosphere provides only partial protection, allowing solar wind to directly impact the upper atmosphere in many regions.

The process of atmospheric escape takes multiple forms. Ion pickup involves charged particles from the ionosphere being accelerated by the solar wind and thrown away from the planet. Sputtering occurs when incoming solar wind particles strike atmospheric molecules with enough energy to eject them into space. The most dramatic form, sometimes called atmospheric stripping, happens when solar wind pressure physically pushes atmosphere off the planet, particularly from regions where magnetic protection is weakest.

Measuring these processes requires precise instrumentation capable of detecting low-energy ions and electrons in the tenuous Martian atmosphere. ESCAPADE carries multiple instruments designed specifically for this purpose, allowing scientists to quantify exactly how much atmosphere Mars loses each second and how that loss rate varies with solar wind conditions. This data will not only explain Mars’ past but also inform planning for future human missions, which will need to understand the radiation environment astronauts will encounter.

Space exploration has always depended on a quiet but essential capability: communication. Long before a spacecraft sends back a breathtaking image of a distant world or a rover begins exploring the surface of another planet, an invisible thread must connect that machine to Earth. Through that thread flows everything that makes exploration possible—commands, telemetry, navigation data, and scientific discoveries. As humanity prepares to venture deeper into the Solar System than ever before, NASA’s Space Communications and Navigation program, known as SCaN, is reshaping how that thread is woven.

The story of SCaN begins with a fundamental challenge of spaceflight. Spacecraft travel vast distances, and those distances make communication both difficult and delicate. Signals must cross millions or even billions of kilometers while remaining strong enough to be detected by receivers on Earth. At the same time, spacecraft require precise navigation, relying on radio signals to determine their position and trajectory with astonishing accuracy. These capabilities demand networks of antennas, relay satellites, sophisticated signal processing systems, and extremely stable clocks.

For decades NASA has operated three major communications networks to support these needs. The Deep Space Network, with its giant radio antennas located in California, Spain, and Australia, provides the primary link to spacecraft exploring the outer reaches of the Solar System. The Near Space Network supports missions closer to Earth, including satellites in Earth orbit and lunar missions. The Space Network, anchored by the Tracking and Data Relay Satellite System, connects spacecraft in low Earth orbit to ground stations without requiring constant direct contact with Earth. Together, these systems have enabled generations of missions, from the Voyager probes to the International Space Station.

Yet the future of space exploration is rapidly changing. NASA’s Artemis program aims to establish a sustained human presence on the Moon. Robotic missions are being planned across the Solar System, while commercial companies are launching satellites, building spacecraft, and developing lunar landers at an unprecedented pace. The volume of data flowing between Earth and space is increasing dramatically. A single modern spacecraft can produce terabytes of information through high-resolution imaging, radar observations, and scientific measurements. Supporting this growing demand requires a communications architecture that is more flexible, scalable, and resilient than ever before.

This is where the SCaN program enters the story. Rather than expanding NASA’s networks alone, SCaN is taking a new approach by working closely with commercial partners to build a hybrid infrastructure that blends government capabilities with private-sector innovation. The idea is both practical and transformative. By integrating commercial communication services into NASA’s operations, the agency can expand its capacity while encouraging the development of an emerging space communications economy.

The science behind space communications may appear simple at first glance. Radio waves, after all, are just electromagnetic signals traveling through space. But sending information across millions of kilometers requires engineering precision at every level. Spacecraft transmitters must encode data onto radio-frequency carriers, modulating the signal in ways that maximize information density while minimizing errors caused by noise. On Earth, enormous antennas collect these faint signals, and sophisticated receivers decode them using advanced algorithms designed to recover data even when the signal is barely distinguishable from background radiation.

Navigation relies on many of the same principles. By measuring the travel time of radio signals between Earth and a spacecraft, engineers can determine the distance to the spacecraft with extraordinary accuracy. Doppler measurements—tiny shifts in the frequency of the signal caused by the spacecraft’s motion—reveal its velocity relative to Earth. Combined with precise models of gravitational forces and spacecraft propulsion, these measurements allow mission controllers to guide spacecraft across the Solar System with pinpoint precision.

SCaN’s efforts to modernize these capabilities extend far beyond traditional radio systems. One of the most exciting developments is the growing use of optical communications, which transmit data using lasers rather than radio waves. Optical communication systems can send significantly more information per second because the higher frequencies of laser light allow much greater bandwidth. In practical terms, this means spacecraft could one day transmit high-definition video from deep space or relay massive datasets from distant planets far more quickly than today’s systems allow.

Integrating commercial providers into this evolving architecture is a major engineering challenge in itself. NASA must ensure that signals transmitted through commercial networks meet strict standards for reliability, security, and interoperability. Spacecraft from different missions must be able to communicate seamlessly with both NASA and commercial ground stations. Achieving this requires standardized communication protocols, precise timing systems, and carefully designed interfaces between spacecraft and network infrastructure.

Commercial companies are already building ground station networks, relay satellites, and data services that can complement NASA’s existing systems. By partnering with these providers, SCaN can expand coverage, reduce operational costs, and encourage innovation across the space industry. At the same time, these partnerships help commercial companies develop services that could support not only NASA missions but also private spacecraft, lunar landers, and future Mars expeditions.

The importance of this work becomes even clearer when imagining the future of space exploration. Missions to the Moon will require continuous communications to support astronauts, robotic vehicles, and scientific instruments operating across the lunar surface. Navigation systems must allow spacecraft to land safely in complex terrain and guide rovers across unfamiliar landscapes. Beyond the Moon, human missions to Mars will depend on robust communication networks capable of operating across tens of millions of kilometers while managing delays that can stretch to more than twenty minutes.

In this environment, communications infrastructure becomes more than just a support system—it becomes the backbone of exploration itself. Without reliable networks, spacecraft cannot be controlled, astronauts cannot be guided, and scientific discoveries cannot be shared with the world.

SCaN’s strategy recognizes that the scale of future exploration will require collaboration. By combining NASA’s decades of experience with the agility and innovation of commercial industry, the program aims to build a communications architecture that grows alongside humanity’s ambitions in space.

In many ways, this effort represents a quiet transformation in how space exploration is conducted. Instead of a single agency building every component of the system, a network of partners is emerging, each contributing technologies, services, and expertise. The result is a communications ecosystem capable of supporting not just a handful of missions, but a thriving presence across the Solar System.

As spacecraft venture farther from Earth and human explorers prepare to return to the Moon and eventually travel to Mars, the invisible web of signals connecting them to home will become more vital than ever. Through the work of the SCaN program and its commercial partners, that web is being strengthened and expanded—ensuring that wherever humanity travels next, the connection to Earth will remain unbroken.

Video credit: NASA

Venus is a world wrapped in thick clouds of sulfuric acid, its surface crushed under pressures more than ninety times that of Earth and heated to temperatures hot enough to melt lead. Despite its resemblance to Earth in size and mass, Venus evolved into something profoundly different. Understanding how and why this happened is one of the most intriguing puzzles in planetary science. NASA’s DAVINCI mission—short for Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging—was designed to confront that mystery directly.

DAVINCI represents the first dedicated mission in decades to explore Venus’s atmosphere with modern scientific instruments. Scheduled for launch later in the decade, the spacecraft will travel across interplanetary space to the second planet from the Sun, carrying with it a powerful orbital platform and a descent probe built specifically to plunge into Venus’s dense atmosphere. The mission is not simply about gathering data; it is about reconstructing the story of a planet that may once have resembled Earth but ultimately followed a dramatically different path.

At the heart of DAVINCI’s mission is a simple question with profound implications: did Venus ever possess conditions that might have supported oceans and a temperate climate? Planetary scientists have long suspected that Venus, early in its history, may have had liquid water and a more Earth-like environment. If that was the case, understanding why Venus transformed into a furnace could help us better understand planetary evolution, climate stability, and even the long-term future of Earth itself.

The engineering behind DAVINCI reflects the immense challenges posed by Venus. The spacecraft must survive a journey to a planet where atmospheric pressure and heat would destroy most conventional spacecraft components within minutes. To overcome these conditions, DAVINCI is built around two primary elements: an orbiter designed to study the planet from above and a robust descent probe engineered to withstand the extreme environment during its plunge through the atmosphere.

The descent probe is the mission’s most daring feature. Encased within a protective heat shield, the probe will separate from the main spacecraft and enter Venus’s atmosphere at tremendous speed. As it descends, parachutes will deploy to slow its fall, allowing it to sample the atmosphere layer by layer. Instruments aboard the probe will measure temperature, pressure, and chemical composition while also analyzing the abundance of noble gases and isotopes—tiny chemical fingerprints that preserve clues about the planet’s formation and atmospheric history.

This descent will last roughly an hour, but during that short time the probe will perform measurements that have not been made since the Soviet Venera missions of the 1970s and 1980s. As the probe drops deeper into the thick atmosphere, it will encounter increasingly intense pressure and heat. Yet the engineering of the probe allows it to survive long enough to transmit a continuous stream of data back to the orbiter. One of its most exciting instruments is a high-resolution imaging system that will capture detailed photographs of the surface as the probe approaches the ground. These images could reveal geological structures that have never been seen clearly before.

Meanwhile, the main DAVINCI spacecraft will continue to orbit Venus, conducting remote sensing observations of the planet’s cloud layers and surface features. From its vantage point above the clouds, the spacecraft will study atmospheric dynamics, investigate the mysterious ultraviolet patterns in the Venusian cloud tops, and map regions of the surface that may provide evidence of past tectonic or volcanic activity.

The science objectives of DAVINCI are closely tied to some of the most fundamental questions about planetary environments. By measuring noble gases such as argon, krypton, and xenon, the mission can reveal information about the processes that shaped Venus’s atmosphere billions of years ago. Noble gases are chemically inert, meaning they preserve ancient records of planetary formation and atmospheric escape. Their relative abundance can help scientists determine whether Venus once had large amounts of water and how much atmosphere the planet may have lost over time.

Another crucial aspect of the mission is the study of Venus’s atmospheric chemistry. The planet’s clouds are composed primarily of sulfuric acid droplets, and the processes that maintain this thick cloud deck remain only partially understood. By analyzing the vertical structure of the atmosphere during its descent, DAVINCI will help scientists unravel the complex chemical reactions occurring within the clouds and the deeper atmosphere.

The descent images taken near the planet’s surface could also provide important geological insights. Scientists are particularly interested in a region known as Alpha Regio, one of the oldest and most complex terrains on Venus. The structures there may resemble ancient continental features, and high-resolution images could help determine whether Venus once experienced geological processes similar to those that shape Earth’s continents.

What makes DAVINCI especially compelling is that it bridges atmospheric science and planetary geology. Most spacecraft studying Venus in recent decades have remained in orbit, mapping the surface with radar or observing the atmosphere remotely. DAVINCI instead dives into the atmosphere itself, collecting measurements directly within the environment that defines the planet.

Beyond Venus itself, the mission has implications for the study of exoplanets. Many of the rocky worlds discovered around other stars appear to resemble Venus more than Earth. Understanding why Venus became so inhospitable could help astronomers interpret the climates of distant planets and identify which ones might be capable of supporting life.

In the broader story of planetary exploration, DAVINCI marks a renewed commitment to understanding our neighboring worlds. For many years Venus was overshadowed by the exploration of Mars, yet scientists increasingly recognize that Venus may hold equally important clues about planetary evolution. The planet stands as both a warning and a laboratory, demonstrating how dramatically a world can change under the influence of atmospheric chemistry, solar radiation, and geological activity.

When DAVINCI finally begins its descent through Venus’s thick clouds, it will be retracing a path last taken by probes nearly half a century ago—but with instruments far more capable and sensitive than anything flown before. In that brief hour-long fall toward the surface, the spacecraft will gather data that could transform our understanding of Venus and help answer one of the most enduring questions in planetary science: how two planets so similar in size could become so radically different in destiny.

The mission is, in essence, a journey not just to Venus, but into the deep history of our Solar System. By peeling back the layers of Venus’s atmosphere, DAVINCI may reveal whether the planet was once a world that could have resembled our own—and what forces turned it into the blazing landscape we see today.

Video credit: NASA Goddard

The European Space Agency’s Jupiter Icy Moons Explorer, known as JUICE, has achieved an unexpected milestone in its journey toward the Jovian system by capturing the first detailed images of interstellar comet 3I/ATLAS. The spacecraft, currently en route to study Jupiter and its ocean-bearing moons, turned its instruments toward the visitor from beyond our solar system in late February 2026, producing remarkable imagery that reveals the comet’s structure in unprecedented detail.

Comet 3I/ATLAS represents only the third confirmed interstellar object ever detected in our solar system, following the discoveries of 1I/’Oumuamua in 2017 and 2I/Borisov in 2019. While those objects provided valuable glimpses into planetary formation processes elsewhere in the galaxy, 3I/ATLAS offered something unique: an approach to the inner solar system that allowed multiple spacecraft and ground-based observatories to observe it simultaneously. JUICE’s position and instrumentation made it particularly well-suited for this unexpected observation opportunity.

The images captured by JUICE’s science camera show the comet’s nucleus surrounded by a luminous coma, the glowing envelope of gas and dust that forms when solar radiation heats the icy body. A distinct tail extends away from the Sun, consisting of particles pushed outward by solar radiation pressure. The spacecraft observed the comet at a distance of approximately 50 million kilometers, close enough to resolve features that ground-based telescopes could only glimpse indirectly.

The JUICE mission was designed primarily for planetary science, with its ten scientific instruments optimized for studying Jupiter’s atmosphere, magnetosphere, and the subsurface oceans suspected to exist beneath the icy crusts of Ganymede, Callisto, and Europa. The spacecraft launched from French Guiana in April 2023 and has been performing a complex trajectory that includes multiple gravity assists, including an unprecedented double Earth-Moon flyby in August 2024. The encounter with 3I/ATLAS represents a bonus observation that demonstrates the versatility of the spacecraft’s instrumentation.

Interstellar comets provide scientists with a rare opportunity to study material from other planetary systems without the need for interstellar travel. The composition of such objects, preserved since their formation around another star, carries chemical fingerprints that may inform our understanding of how planets form and evolve throughout the galaxy. 3I/ATLAS exhibited characteristics consistent with comets originating from distant, cool stellar environments, with activity levels suggesting the release of water vapor, carbon dioxide, and other volatiles as it approached the Sun.

The JUICE observations were not without technical challenges. The spacecraft’s medium-gain antenna had to be used for data transmission rather than the high-gain antenna, reducing the data rate due to the spacecraft’s orientation relative to the Sun and Earth. Despite these constraints, the mission team successfully retrieved images that have already contributed to scientists’ understanding of cometary activity mechanisms.

Beyond the immediate scientific value, the JUICE observations highlight the importance of spacecraft flexibility and the potential for serendipitous discoveries in space exploration. Planetary missions often encounter unexpected targets or phenomena that fall outside their primary objectives but represent valuable science opportunities. TheJUICE team’s ability to reorient the spacecraft and repurpose its instruments on short notice reflects both the spacecraft’s robust design and the team’s scientific adaptability.

As 3I/ATLAS continues its journey back toward interstellar space, observations from JUICE will be supplemented by other missions and facilities. The Juno spacecraft orbiting Jupiter may observe the comet during its close approach to the giant planet in March 2026, though fuel constraints and operational priorities complicate any potential redirection. Each new observation adds to our growing picture of these interstellar travelers and what they can teach us about the cosmos beyond our own solar system.

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The Mars Sample Return (MSR) campaign is one of the most ambitious robotic exploration efforts ever conceived: to retrieve a selection of scientifically curated Martian rocks, soils, and atmospheric samples—collected and cached by NASA’s Perseverance rover—and return them safely to Earth. This bold undertaking, executed in partnership with the European Space Agency (ESA), promises to revolutionize what we know about Mars’ geological history, its potential for past life, and even hazards and opportunities for future human missions.

On a scientific level, MSR seeks to preserve the integrity of these precious samples—protecting them from contamination, temperature extremes, and degradation—so that they arrive on Earth in a form as pristine as possible. Once returned, the specimens can be studied with sophisticated technologies unavailable to rovers, unlocking insights into Mars’ formation, its chemical and mineral makeup, and whether the Red Planet ever harbored life. The mission also holds strategic value for future human exploration: by characterizing martian dust, chemistry, and potential biohazards, MSR lays groundwork for crewed missions to Mars.

The MSR campaign is composed of several interlocking elements. First, the Perseverance rover (part of the earlier Mars 2020 mission) has been drilling and caching samples in sealed titanium tubes, left behind on the Martian surface. A future lander will touch down near Perseverance and deploy a robotic arm to recover those tubes, then transfer them into a container embedded in the nose of a Mars Ascent Vehicle (MAV).

Once sealed, the MAV will launch from Mars, sending the container into Martian orbit. There, an Earth Return Orbiter—provided by ESA—will rendezvous and capture it, transfer the canister into a highly reliable Earth-entry capsule, and fire toward home. Back on Earth, the sample capsule is designed for a high-integrity reentry and safe recovery, after which the Martian materials will be transported to a specialized Sample Receiving Facility for detailed study.

The technical challenges are immense. Launching a rocket (the MAV) from another planet, achieving orbital rendezvous with a sample container, and then returning that payload across deep space demands precision, reliability, and robust planetary protection protocols. The mission also carries significant cost risk: earlier architectures were projected to cost around $11 billion, but NASA is now exploring more streamlined and cost-effective designs that could reduce the price to between $6 billion and $7 billion.

As of early 2025, NASA has not finalized the mission’s design. A strategic review is underway, and by mid-2026 the agency expects to decide between alternative architectures: one using traditional NASA lander systems, the other leveraging commercial partners and lighter launch vehicles. The timeline for returning the samples to Earth could shift: earlier plans had targeted a return in the early 2030s, but realities of budget, risk, and design could push that into the mid- to late 2030s.

If successful, the Mars Sample Return mission would represent a quantum leap in our ability to study Mars. Analyses done on Earth can apply far more sophisticated techniques than what any rover can carry, from ultrasensitive microscopes to mass spectrometers optimized for detecting organic molecules. These studies could finally answer whether Mars harbored life, how its climate and geology evolved, and how its atmosphere interacted with solar wind and cosmic radiation over eons.

From an exploration standpoint, MSR also paves the way for human missions. Understanding the composition of martian dust, potential biohazard risks, and geologic diversity is vital to designing habitats, life support, and mission strategies. By returning real Martian matter to Earth, the mission also supports planetary protection protocols that future human explorers will need to navigate.

In sum, MSR is more than a campaign—it’s a bridge between robotic exploration and human return, a scientific leap, and a testament to international cooperation. If executed well, it could bring back Mars in a jar, unlocking secrets that only the Red Planet holds.

Video credit: Lockheed Martin

Asteroid (52246) Donaldjohanson is a small but significant body located in the main asteroid belt between Mars and Jupiter. Though it may not have the fame of larger or more compositionally unique asteroids, Donaldjohanson stepped into the scientific spotlight thanks to its pivotal role in NASA’s ambitious Lucy mission — a 12-year journey to explore the Trojan asteroids that share Jupiter’s orbit. Before Lucy reaches its primary Trojan targets, it first encountered Donaldjohanson, making it a key object of study in humanity’s effort to understand the solar system’s early history.

Discovery

Asteroid Donaldjohanson was discovered on March 2, 1981, by astronomer Schelte “Bobby” Bus at the Siding Spring Observatory in Australia. Initially designated 1981 EQ5, the asteroid was later named in honor of Dr. Donald Johanson, the paleoanthropologist best known for co-discovering the fossilized remains of Australopithecus afarensis, famously known as Lucy, in Ethiopia in 1974.

This naming decision was particularly meaningful to NASA, as their Lucy spacecraft, launched in 2021, carries a similar goal: to uncover the fossils of the solar system—namely, the Trojan asteroids, which are thought to be leftover building blocks from planetary formation. Naming the asteroid after Johanson creates a poetic link between the exploration of human origins and the origins of our solar system.

Location and Characteristics

Donaldjohanson resides in the inner region of the main asteroid belt, at a semi-major axis of approximately 2.39 astronomical units (AU) from the Sun. Its orbit is relatively circular and stable, with a low eccentricity and inclination, placing it within the Erigone asteroid family, a large group of stony asteroids in the inner main belt.

Though smaller and less well-studied than some of its larger neighbors, Donaldjohanson’s value lies in its convenience and timing—it is perfectly positioned to serve as a flyby target for the Lucy spacecraft en route to the outer solar system.

The Lucy Mission Flyby

NASA’s Lucy spacecraft has successfully completed a flyby of asteroid Donaldjohanson, providing unprecedented insights into this intriguing celestial body. Lucy performed a close flyby at a distance of approximately 600 miles (960 kilometers), capturing detailed images and data.

The flyby is particularly exciting because very few main belt asteroids have been visited by spacecraft, and each one offers a new data point in understanding the diversity and history of these primitive bodies. By studying Donaldjohanson, Lucy will help bridge the scientific gap between the inner and outer asteroid populations.

During the flyby, Lucy used its three onboard science instruments — L’LORRI (a long-range imager), L’Ralph (a visible and infrared spectrometer), and L’TES (a thermal emission spectrometer) — to examine Donaldjohanson’s surface geology, composition, and thermal properties. In addition to gathering scientific data, the flyby allowed engineers to practice operating the spacecraft’s pointing, tracking, and data-gathering systems ahead of the more complex Trojan encounters.

The flyby revealed that Donaldjohanson is a contact binary asteroid, characterized by two lobes connected by a narrow neck, resembling a peanut or a barbell. This structure suggests a history of two separate bodies gently colliding and merging. The asteroid measures about 8 kilometers in length and 3.5 kilometers at its widest point, larger than previously estimated.

Donaldjohanson’s surface exhibits a complex geology with varying crater densities between its lobes, indicating a diverse collisional history. These observations provide valuable data on the processes that shaped such bodies and, by extension, the early solar system. The successful flyby serves as a critical rehearsal for Lucy’s upcoming encounters with Trojan asteroids near Jupiter, scheduled between 2027 and 2033.

Looking Ahead

While Donaldjohanson is not the primary target of Lucy’s mission, the asteroid plays an essential role in validating the mission’s capabilities and providing early science returns. Its proximity and well-known orbit make it an ideal testbed. Moreover, the data collected during the flyby will contribute to our broader understanding of asteroid families, space weathering, and solar system evolution.

After the 2025 encounter, Lucy will go on to visit eight Trojan asteroids, including Eurybates, Polymele, Leucus, Orus, and the binary pair Patroclus and Menoetius. These objects are expected to reveal new insights into the formation of the gas giants and the migration of planets during the early stages of solar system development.

In this grand journey, asteroid Donaldjohanson acts as the first stepping stone—a humble but crucial waypoint on the path to uncovering our solar system’s ancient past. As such, it not only honors the legacy of scientific discovery associated with its namesake but also propels forward the exploration of space’s most enduring mysteries.