The four members of NASA’s SpaceX Crew-6 mission move their Dragon Endeavour spacecraft between docking ports on the International Space Station. Aboard are: NASA astronauts Steve Bowen and Woody Hoburg, UAE astronaut Sultan Alneyadi, Roscosmos cosmonaut Andrey Fedyaev.
The crew will undock from the space-facing port of the station’s Harmony module, then dock at the station’s forward Harmony port. Endeavour is relocating to make room for SpaceX’s 28th cargo resupply mission, currently scheduled to arrive in June.
Inspired by the Renaissance vision of Leonardo da Vinci, NASA is presently preparing its scientific return to Venus’ atmosphere and surface with a mission known as the “Deep Atmosphere of Venus Investigation of Noble gases, Chemistry, and Imaging” (DAVINCI).
The DAVINCI mission will “take the plunge” into Venus’ enigmatic history using an instrumented deep atmosphere probe spacecraft that will carry five instruments for measuring the chemistry and environments throughout the clouds and to the surface, while also conducting the first descent imaging of a mountain system on Venus known as Alpha Regio, which may represent an ancient continent. In addition, the DAVINCI mission includes two science flybys of Venus during which it will search for clues to mystery molecules in the upper cloud deck while also measuring the rock types in some of Venus highland regions.
All of these new and unique measurements will make the ‘exoplanet next door’ into a key place for understanding Earth and Venus sized exoplanets that may have similar histories to our sister planet. DAVINCI will pave the way for a series of missions by NASA and ESA in the 2030’s by opening the frontier as it searches for clues to whether Venus harbored oceans and how its atmosphere-climate system evolved over billions of years. DAVINCI’s science will address questions about habitability and how it could be “lost” as rocky planets evolve over time. NASA’s Goddard Space Flight center leads the DAVINCI Mission as the PI institution.
Credit: NASA’s Goddard Space Flight Center/James Tralie (ADNET): Lead Producer, Lead Editor/Giada Arney (NASA): Narrator/Walt Feimer (KBRwyle): Animator/Jonathan North (KBRwyle): Animator/Michael Lentz (KBRwyle): Animator/Krystofer Kim (KBRwyle): Animator/James Garvin (NASA, Chief Scientist Goddard): Scientist/Music: “Blackened Skies” by Enrico Cacace and Lorenzo Castellarin of Universal Production Music
Virgil “Gus” Grissom – Commander, Edward White – Command Pilot, Roger Chaffee – Pilot
STS-51 L (January 28, 1986)
Francis R. Scobee – Commander, Michael J. Smith – Pilot, Judith A. Resnik – Mission Specialist 1, Ellison Onizuka – Mission Specialist 2, Ronald E. McNair – Mission Specialist 3, Gregory B. Jarvis – Payload Specialist 1, Sharon Christa McAuliffe – Payload Specialist 2
STS-107 (February 1, 2003)
Rick D. Husband – Commander, William C. McCool – Pilot, Michael P. Anderson – Payload Commander, David M. Brown – Mission Specialist 1, Kalpana Chawla – Mission Specialist 2, Laurel Clark – Mission Specialist 3, Ilan Ramon – Payload Specialist 1
NASA’s InSight lander detected seismic waves from a meteoroid and was able to capture the sound of the space rock striking the surface of Mars for the first time. The meteoroid – the term used for incoming space rocks before they hit the ground – entered Mars’ atmosphere on Sept. 5, 2021, exploding into at least three shards that each left craters behind. Mars’ atmosphere is just 1% as dense as Earth’s, allowing far more meteoroids to pass through and impact the Red Planet’s surface.
This event marks the first time seismic and acoustic waves from an impact were detected on the Red Planet. Why does this meteoroid impact sound like a “bloop” in the video? It has to do with a peculiar atmospheric effect that’s also observed in deserts on Earth.
After sunset, the atmosphere retains some heat accumulated during the day. Sound waves travel through this heated atmosphere at different speeds, depending on their frequency. As a result, lower-pitched sounds arrive before high-pitched sounds. An observer close to the impact would hear a “bang,” while someone many miles away would hear the bass sounds first, creating a “bloop.”
NASA’s Mars Reconnaissance Orbiter flew over the estimated impact site to confirm the location. The orbiter used its black-and-white Context Camera to reveal three darkened spots on the surface.
After locating these spots, the orbiter’s team used the High-Resolution Imaging Science Experiment camera, or HiRISE, to get a color close-up of the craters. Because HiRISE sees wavelengths the human eye can’t detect, scientists change the camera’s filters to enhance the color of the image. The areas that appear blue around the craters are where dust has been removed or disturbed by the blast of the impact. Martian dust is bright and red, so removing it makes the surface appear relatively dark and blue.
Credit: NASA/JPL-Caltech/University of Maryland/University of Arizona/CNES/IPGP/Manchu/Bureau 21/ETH Zurich/Kirschner/van Driel
You can’t get all the way to Mars without fuel – and a lot of it. Chemical propulsion has been the standard for spaceflight for decades, but if humans are to travel to Mars, they need a propulsion technology much more powerful.
Although they’re relatively new – nuclear systems for propulsion or electrical power are simple. Fission-based systems work by splitting low-enriched uranium atoms in a reactor to create heat. Super-cooled hydrogen is flowed into the reactor and the heat from the uranium quickly turns the hydrogen into a very hot, pressurized gas.
In nuclear thermal propulsion (NTP), the super-hot pressurized hydrogen is funnelled out a nozzle to create a powerful thrust. The mechanics of an NTP engine are much simpler and vastly more efficient than chemical propellant engines.
In fission surface power systems, the heat from the splitting of uranium atoms is converted to electricity. These systems can produce at least 40 kilowatts of power and can operate on permanently shadowed regions of the Moon.
The Cislunar Autonomous Positioning System Technology Operations and Navigation Experiment, or CAPSTONE, will be the first spacecraft to fly a unique orbit around the Moon intended for NASA’s future Artemis lunar outpost Gateway. Its six-month mission will help launch a new era of deep space exploration.
Multiple partner businesses contributed to CAPSTONE with support from NASA’s small business programs. The spacecraft was built and tested by Tyvak Nano-Satellite Systems, Inc., a Terran Orbital Corporation, operated and managed by Advanced Space, and will be launched by Rocket Lab USA, Inc.
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