OrbitalHub

After more than a decade of delays, geopolitical shifts, and mission redesigns, ESA’s Rosalind Franklin rover finally has a confirmed launch provider. NASA announced on April 16, 2026, that SpaceX’s Falcon Heavy will launch the European Mars rover from Kennedy Space Center’s Launch Complex 39A in late 2028, with arrival on the Red Planet expected around late 2030. The contract, worth approximately $176 million through NASA’s Launch Services program, marks SpaceX’s first interplanetary mission to Mars and the culmination of an arduous journey for Europe’s first Mars rover.

The mission’s history reads like a geopolitical drama spanning multiple continents and two decades. Originally conceived in 2001 as part of ESA’s Aurora Programme, the rover was designed to search for biosignatures of past or present life on Mars through the most ambitious subsurface drilling attempt ever attempted on another world. The original plan called for a Russian-provided launch vehicle and landing platform through a partnership with Roscosmos, the Russian space agency. That partnership dissolved following Russia’s invasion of Ukraine in 2022, when ESA member states voted to suspend cooperation with Russia.

The rover’s scientific payload centers on a 2-meter drilling system, nearly double the depth achieved by any previous Mars rover. NASA’s Perseverance, for comparison, drills to 7 centimeters, while the Soviet-era Lunokhod rovers never attempted subsurface sampling on another world. The drill retrieves core samples that have been shielded from the harsh Martian surface radiation and oxidation that destroys organic compounds near the top layer of regolith. Once collected, the samples enter the Analytical Laboratory Drawer, where nine instruments including the Panoramic Camera and mass spectrometer characterize the composition.

The landing site, Oxia Planum, was selected after years of debate among planetary scientists. This region shows evidence of ancient clay mineral formation, which requires liquid water to create. Clay minerals serve as excellent preservers of organic compounds, as they can trap and shield complex molecules from degradation. The choice reflects the mission’s core hypothesis: if life ever arose on Mars, the chemical traces would be most likely to survive in protected subsurface environments.

NASA’s role extends beyond launch services. The agency is providing radioisotope heater units, tiny devices that use the decay heat of plutonium-238 to keep electronics warm during the frigid Martian nights. Without these units, the rover would not survive the temperature swings that plunge to minus 100 degrees Celsius. The Trump administration’s FY2027 budget proposed cutting approximately $100 million from NASA’s ROSA program that funds these contributions, but NASA proceeded with the SpaceX contract regardless, signaling continued commitment to international science partnerships despite broader budget pressures.

The selection of Falcon Heavy from Launch Complex 39A places the mission alongside NASA’s own heavy-lift ambitions. LC-39A has hosted Apollo missions, space shuttles, and Falcon Heavy launches including the historic Tesla Roadster flight in 2018. The capacity to lift approximately 3.5 tonnes to trans-Mars injection provides the delta-v needed for the eight-month journey. The backup launch windows in 2030 avoid the Mars dust storm season that historically has disrupted landing operations.

Drilling into bedrock on Mars presents challenges that exceed any previous subsurface expedition. The 2-meter drill must operate in temperatures ranging from minus 80 degrees to plus 20 degrees Celsius, with the mechanical systems enduring thermal cycling that weakens metals through repeated expansion and contraction. The drill string uses a percussive mechanism similar to rotary hammers, powered by electric motors that must produce sufficient torque while drawing minimal current from the solar panels.

The sample retrieval mechanism seals the cores in containers that maintain the terrestrial context of each sample. On Earth, contamination from drilling fluids and equipment can obscure the scientific signal, so the rover’s sample handling system was designed to minimize terrestrial organic contact. Each core breaks into fragments that fit into the analytical instruments, where the mass spectrometer detects organic compounds through vaporization and ion separation.

Solar power at Mars delivers approximately 40 percent of the energy available at Earth, requiring the largest solar array ever deployed on a planetary rover. The 1,200-watt-hour daily capacity must power movement, drilling operations, instrument analysis, and communications while maintaining survival systems through the Martian night. During dust storms, the array may produce only a fraction of rated power, limiting operations until conditions improve.

NASA’s Juno spacecraft, orbiting Jupiter since 2016, continues to deliver surprising discoveries about the largest planet in our solar system. Data from the mission, announced in early 2026, reveals that Jupiter experiences lightning storms vastly more powerful than any seen on Earth, with individual bolts carrying up to 10 trillion joules of energy. These findings add to a growing catalog of discoveries from the mission, which has fundamentally changed our understanding of gas giant planets.

The discovery of extreme lightning came from analysis of Juno’s Microwave Radiometer, which detected 613 microwave pulses from lightning over 12 flybys between 2021 and 2022. Each pulse represents a discharge hundreds of times more powerful than typical terrestrial lightning. The largest events contain energy equivalent to approximately 2,400 tons of TNT, roughly one-sixth the energy of the Hiroshima atomic bomb.

Jupiter’s atmosphere produces these powerful storms in ways that differ from Earth’s. On our planet, lightning requires the separation of electric charges in water-based storm clouds. Jupiter’s atmosphere contains water clouds at depths where pressures exceed several bar, but the precise charge separation mechanism remains under investigation. Ammonia clouds may play a role in Jupiter that water clouds play on Earth.

The detection of lightning at polar latitudes surprised researchers, who had expected such activity to be limited to equatorial regions. The storms occur in both polar vortices and in the belts that characterize Jupiter’s atmospheric circulation, suggesting that the underlying mechanisms operate across a wider range of conditions than previously recognized.

Other Juno discoveries from early 2026 include the most powerful volcanic eruption ever observed on Io, Jupiter’s innermost moon. The event surpassed all previous records for volcanic output on that moon, which holds the distinction of being the most volcanically active body in the solar system. The observation demonstrates that Io’s interior remains vigorously active, driven by tidal heating from its interaction with Jupiter and the other Galilean moons.

Juno’s measurement of Europa’s ice shell thickness revealed an average of approximately 29 kilometers over half the moon’s surface, providing critical data for missions planning to explore the subsurface ocean. The ice shell represents the barrier between the surface and the ocean that may contain liquid water, and understanding its thickness affects how future missions might access that ocean.

A February 2026 announcement revised Jupiter’s measured dimensions. Using radio occultation data from 13 flybys, Juno revealed that Jupiter is approximately 8 kilometers narrower at the equator and 24 kilometers flatter at the poles than previous estimates from the 1970s Pioneer and Voyager missions. These refinements improve models for understanding Jupiter’s interior structure and for interpreting observations of exoplan gas giants.

Despite these achievements, Juno’s future remains uncertain. NASA considered terminating the mission in its FY2026 budget, citing the approximately $260 million annual cost. The spacecraft remains healthy as of April 2026, but no decision has been announced about mission extension beyond the current phase.

Lightning on gas giants occurs in atmospheres composed primarily of hydrogen and helium, with trace amounts of water, ammonia, and other compounds. The electrical properties of these atmospheres differ from Earth’s water-based clouds, where charge separation occurs as water droplets collide and freeze.

The energy in Jupiter’s lightning reflects the planet’s immense size and the scale of atmospheric dynamics. The Great Red Spot, a storm larger than Earth, demonstrates the energy available in Jupiter’s atmosphere. Convective updrafts in the belts and zones drive the circulation that produces electrical activity.

Juno’s Microwave Radiometer detects lightning at wavelengths around 1.4 centimeters, where the instrument can peer hundreds of kilometers deep into Jupiter’s atmosphere. This penetration depth allows detection of lightning from depths where water clouds exist, at pressures exceeding several bar. Radio wavelengths also pass through the cloud layers that would obscure optical detection.

The detection of powerful lightning has implications for the interior energy balance of Jupiter. Lightning requires energy from atmospheric dynamics, which in turn reflects heat from Jupiter’s interior. The power output of lightning storms contributes to the overall energy budget that Juno has measured from orbit.

The European Space Agency’s Hera spacecraft is on course for a November 2026 rendezvous with the Didymos binary asteroid system, carrying with it the culmination of humanity’s first attempt to change the orbit of a celestial body. Launched in October 2024 aboard a SpaceX Falcon 9, Hera is now completing the final leg of its 24-month journey, having already executed a critical deep-space maneuver in February-March 2026 that refined its trajectory toward the asteroid pair.

The mission represents the follow-up to NASA’s Double Asteroid Redirection Test, which struck the moonlet Dimorphos in September 2022 at approximately 6.6 kilometers per second. That impact shortened Dimorphos’s orbital period around its parent asteroid Didymos by about 32 minutes, and that seemed dramatic until subsequent research revealed something even more significant: the entire binary system’s orbit around the Sun had actually shifted by more than 10 micrometers per second. For the first time in history, human activity had measurably altered an asteroid’s solar orbit.

Hera’s primary objective is to document what happened. The spacecraft carries three main instruments: an Asteroid Framing Camera that will map the surface in color, a thermal infrared imager to measure temperatures across the moonlet, and a laser altimeter to precisely gauge topography. The spacecraft also carries two briefcase-sized CubeSats named Milani and Juven tas that will deploy once Hera arrives at Didymos. Milani will analyze surface composition using spectroscopy, while Juven tas will attempt a landing on Dimorphos to measure subsurface density using ground-penetrating radar.

When Hera enters orbit around Didymos in late 2026, it will begin mapping the impact crater created by DART. The spacecraft will approach to within a few hundred meters of the asteroid, close enough to produce images with 10-centimeter resolution. This close proximity work represents some of the most demanding navigation in deep space, requiring software that can reconstruct the environment from cameras and sensors in real-time.

The February 2026 trajectory correction burned 123 kilograms of propellant, the largest maneuver of the mission. This burn aligned Hera for the approach phase that will bring it to Didymos in November. Ground controllers at the European Space Operations Centre in Darmstadt monitored the burn, which lasted just under three minutes and changed the spacecraft’s velocity by approximately 180 meters per second.

Data from Hera will inform future planetary defense strategies. The kinetic impactor technique demonstrated by DART works, but questions remain about exactly how efficiently momentum transfers from an impact to an asteroid. The density and porosity of the target affect outcomes significantly. If an asteroid is rubble-pile in structure, held together by its own gravity, impact energy spreads differently than if it were solid rock. Hera will answer these questions.

When a spacecraft collides with an asteroid, the resulting deflection depends on several factors described by the momentum equation p = mv, where momentum equals mass times velocity. The spacecraft carries momentum equal to its mass multiplied by its impact velocity. But the asteroid also receives momentum from ejected material accelerated away from the impact site. This “bonus” momentum from ejecta can substantially exceed the spacecraft’s incoming momentum, sometimes doubling or even tripling the effective deflection.

The efficiency is measured by beta, a factor indicating how much more effective the impact is than the spacecraft alone. DART achieved a beta of approximately 2.5, meaning the deflection was 2.5 times what the spacecraft’s momentum alone would predict. Hera will measure beta more precisely, enabling accurate predictions for real threat scenarios.

The challenge for future missions is timing. A deflection works best when performed years in advance, as even a small velocity change accumulates over multiple orbits. The earlier the intervention, the less delta-v is required. For an asteroid discovered decades before potential impact, a gentle push could suffice where a late intervention might require unprecedented velocities.

Private companies aiming to extract resources from asteroids are advancing rapidly in 2026, with multiple startups targeting their first deep space missions. AstroForge, Karman+, and TransAstra are pursuing different approaches to what analysts describe as a potential trillion-dollar industry, though significant technical and regulatory hurdles remain before commercial operations become reality.

AstroForge, a California-based startup, is preparing for its DeepSpace-2 mission in 2026, which aims to become the first private spacecraft to land on an asteroid outside Earth’s planetary gravity well. The mission follows earlier tests and targets platinum-group metals that exist in concentrated quantities on certain asteroids. The company has designed scalable spacecraft specifically for deep-space prospecting, moving beyond the concept stage to flight hardware.

Karman+ raised 20 million dollars in 2025 and is targeting 2026 for its first autonomous asteroid-mining demonstration. The company’s technology focuses on extraction systems that could process water and metals in the low-gravity environment of small bodies. This “second wave” of space mining companies has learned from earlier efforts that encountered technical challenges, applying those lessons to more robust system designs.

TransAstra has taken a more ambitious approach, proposing what it calls the “Honey Bee” vehicle for optical mining of water and metals. The company’s most publicized concept involves bagging a house-sized near-Earth asteroid and relocating it for processing over 900,000 miles from Earth. While still conceptual, the approach has attracted attention and investment, though the engineering challenges of capturing and moving an asteroid remain substantial.

Market analysts project the asteroid mining sector could grow from approximately 2 to 2.5 billion dollars in 2025-2026 to over 5 billion dollars by 2030, representing compound annual growth exceeding 20 percent. The theoretical resource potential is enormous: a single metal-rich asteroid could contain more platinum than has been mined throughout human history.

However, the legal framework governing asteroid resources remains uncertain. No clear international framework exists for ownership claims or environmental protections in space. The 2015 U.S. Commercial Space Launch Competitiveness Act grants American companies property rights over extracted resources, but this position is not universally accepted internationally.

NASA continues to monitor the sector, with interest in asteroid tracking capabilities that have both mining and planetary defense applications. The space agency’s Psyche mission, which arrived at the metal-rich asteroid 16 Psyche in 2024, provides data relevant to understanding potential mining targets, though no NASA-funded mining missions are planned for 2026.

Extracting resources from asteroids differs fundamentally from terrestrial mining operations. On small bodies with surface gravity less than one-thousandth of Earth’s, even modest thrust can overcome gravitational binding, enabling extraction techniques impossible on Earth.

Optical mining, as proposed by TransAstra, uses concentrated sunlight to heat asteroid surface material, causing volatile compounds to sublimate and become collectable. The water content of certain near-Earth asteroids makes this approach attractive for potential propellant production in space.

The mechanical properties of asteroid material present challenges for traditional drilling or excavation approaches. Many asteroids appear to be “rubble piles,” collections of debris held together by weak gravity rather than solid rock. This structure affects how materials respond to extraction efforts.

The value proposition for asteroid resources depends heavily on the target material. Water ice, if processable into liquid hydrogen and oxygen, could serve as rocket propellant in space, avoiding the need to launch propellant from Earth’s surface. Platinum-group metals, valuable on Earth, would require return to surface markets to realize value, adding transportation costs and complexity.

TransAstra, a NASA-backed startup, announced in March 2026 a groundbreaking study to capture and relocate a near-Earth asteroid approximately 100 tons in mass, marking a significant escalation in the commercial asteroid mining industry. The study, conducted in partnership with the space agency, explores methods for enveloping the asteroid in an inflatable container and moving it to lunar orbit for eventual resource extraction.

The concept builds on technology already tested aboard the International Space Station in 2025, where TransAstra demonstrated its “bag” system in low Earth orbit. The inflatable structure, designed to surround a small asteroid and contain its fragments during capture, passed initial verification tests showing it can survive the thermal and structural demands of space operations. The new study extends this approach to much larger objects, representing a fundamental leap in scale from previous demonstrations.

The company’s approach addresses one of the fundamental challenges in asteroid resource extraction: accessing material that would be prohibitively expensive to mine through traditional methods. Rather than sending mining equipment to distant asteroids and returning processed materials to Earth, the TransAstra concept involves moving the asteroid itself to a convenient location where continuous resource extraction becomes practical.

Funding for the study reflects growing government interest in asteroid resources. The U.S. Space Force has provided additional investment to scale the technology, recognizing potential applications for in-space manufacturing and propellant production. As orbital operations expand, the ability to extract materials from near-Earth asteroids could reduce dependence on Earth-launched resources, lowering the cost of sustained space operations.

TransAstra is not alone in pursuing asteroid mining. AstroForge, another U.S.-based company, has raised approximately $55 million toward extracting platinum-group metals from asteroids. The company experienced a spacecraft setback but continues preparing for asteroid landing tests. Karman+ secured $20 million in February 2025 to develop autonomous spacecraft for near-Earth asteroid mining, targeting a demonstration mission in 2027.

The asteroid mining market is projected to grow from $2.49 billion in 2026 to $5.42 billion by 2030, representing a compound annual growth rate of 21.4 percent. This expansion reflects anticipated demand for rare metals and the strategic value of establishing in-space resource extraction capabilities before lunar and Mars ambitions require substantial material support.

Moving a 100-ton asteroid requires careful consideration of momentum and energy. The asteroid’s orbital velocity around the Sun determines the energy required to alter its trajectory, with even small changes requiring substantial thrust when applied to objects with such great mass. TransAstra’s approach involves applying gentle continuous force rather than sudden impulse, using solar electric propulsion to gradually modify the asteroid’s orbit over months or years.

The thermal environment during the capture operation presents unique challenges. Asteroids rotate, presenting changing thermal profiles to the sun as they tumble through space. The inflatable capture bag must maintain structural integrity across temperature extremes that could reach minus 100 degrees Celsius in shadow and positive 100 degrees Celsius in direct sunlight. Materials selection focuses on thermal resilience and resistance to micrometeoroid puncture.

Containment of the asteroid once captured requires the bag to maintain its shape despite the irregular shape of most asteroid surfaces. The inflatable structure must distribute forces evenly across contact points, avoiding concentrated loads that could tear the material. TransAstra’s design incorporates multiple redundant chambers, allowing the bag to maintain containment even if some sections experience damage.

The United States Congress effectively terminated NASA’s Mars Sample Return program in January 2026, redirecting $110 million to a new “Mars Future Missions” line item while explicitly stating that the existing program would not receive support. The decision marks one of the most significant shifts in NASA’s planetary exploration strategy in decades, leaving approximately 30 samples collected by the Perseverance rover stranded on the Martian surface indefinitely.

The cancellation emerged from the Fiscal Year 2026 budget process, where the Trump administration proposed terminating Mars Sample Return due to escalating costs and projected timelines. Estimates placed the total cost at up to $11 billion, with samples potentially not returning until 2040 at the earliest. These figures proved unacceptable to congressional appropriators, who instead passed a compromise spending bill that explicitly excluded support for the existing program.

The Mars Sample Return campaign represented a joint NASA-ESA effort to bring Martian material to Earth for detailed laboratory analysis. Perseverance has been collecting samples since 2021, caching them at strategic locations across Jezero Crater for later retrieval. The original architecture called for a complex sequence of missions: an ascent vehicle to launch the samples into Martian orbit, a transfer spacecraft to capture them, and a return vehicle to bring them to Earth.

The program’s troubles predated the 2026 cancellation. Independent reviews in 2023 and 2024 criticized the architecture as overly complex and expensive, with the Planetary Science Decadal Survey recommending that NASA seek a more affordable approach. The agency paused architecture work and studied alternatives, but cost estimates remained prohibitively high regardless of the chosen approach.

The decision to cut Mars Sample Return has generated substantial criticism from the scientific community. Researchers note that laboratory analysis of Martian material could address fundamental questions about Mars’s past habitability and whether life ever existed on the planet. The samples collected by Perseverance include formations that show potential biosignatures, making their analysis particularly compelling.

ESA, which had committed significant resources to the program, is now reassessing its role in Mars exploration. The European agency’s contributions included the Earth Return Orbiter, which would have captured the sample container in Martian orbit and returned it to Earth. With the NASA program cancelled, ESA faces decisions about whether to pursue independent or alternative approaches.

The $110 million redirected to “Mars Future Missions” could support technology development for future sample retrieval attempts, including work on Mars landing systems and sample containment technologies. However, no specific mission has been proposed, and the funding level represents a fraction of what the full program would have required.

The cancellation leaves China potentially positioned as the first nation to return Martian samples to Earth. That country’s Tianwen-1 mission included an orbiter and lander, though not a sample return component. However, Chinese scientists have discussed sample return ambitions, and the U.S. decision may accelerate those plans.

For now, the samples collected by Perseverance remain where they were deposited, scattered across the floor of Jezero Crater. The rover continues operating, collecting additional samples and conducting scientific investigations, though the ultimate purpose of those samples remains uncertain. Future missions may retrieve them, or they may remain as artifacts of a program that came close to achieving something unprecedented before falling to budget realities.

Returning material from Mars presents one of the most challenging problems in spaceflight. The planet’s gravitational well requires substantial energy to escape, with a velocity delta of approximately 5.6 kilometers per second needed to reach low Mars orbit. This is comparable to the total velocity change required to reach Mars from Earth in the first place.

The Mars Sample Return architecture addressed this challenge through multiple vehicles. A Mars Ascent Vehicle would launch from the surface carrying the sample container, achieving orbital insertion without relying on atmospheric drag for deceleration. An Earth Return Orbiter would then capture this container in orbit and perform the much larger maneuver needed to transfer to an Earth-return trajectory.

The thermal protection required for Earth reentry adds complexity. The sample container would strike Earth’s atmosphere at velocities approaching 12 kilometers per second, generating temperatures exceeding 2,000 degrees Celsius. The capsule design incorporates heat shields similar to those used on Apollo return vehicles, sized appropriately for the mass and velocity of the return trajectory.

Containment represents a critical requirement given the possibility of Martian material posing biological hazards. The samples must remain sealed throughout reentry and landing, with containment verified before any potential exposure to Earth’s biosphere. This requirement adds mass and complexity to the return vehicle, as the sealed container must survive the entire descent and recovery process intact.