Copernical Team
New research shows that Mars did not dry up all at once
The Perseverance rover has just landed on Mars. Meanwhile, its precursor Curiosity continues to explore the base of Mount Sharp (officially Aeolis Mons), a mountain several kilometers high at the center of the Gale crater. Using the telescope on the ChemCam instrument to make detailed observations of the steep terrain of Mount Sharp at a distance, a French-US team headed by William Rapin, CNRS researcher at the Institut de Recherche en Astrophysique et Planétologie (CNRS/Université Toulouse III/CNES), has discovered that the Martian climate recorded there alternated between dry and wetter periods, before drying up completely about 3 billion years ago.
Say cheese on Mars: Perseverance's selfie with Ingenuity
NASA's Perseverance Mars rover took a selfie with the Ingenuity helicopter, seen here about 13 feet (4 meters) away in this image from April 6, 2021, the 46th Martian day, or sol, of the mission. Perseverance captured the image using a camera called WATSON (Wide Angle Topographic Sensor for Operations and eNgineering), part of the SHERLOC (Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals) instrument, located at the end of the rover's robotic arm.
NASA's Odyssey orbiter marks 20 historic years of mapping Mars
NASA's 2001 Mars Odyssey spacecraft launched 20 years ago on April 7, making it the oldest spacecraft still working at the Red Planet. The orbiter, which takes its name from Arthur C. Clarke's classic sci-fi novel "2001: A Space Odyssey" (Clarke blessed its use before launch), was sent to map the composition of the Martian surface, providing a window to the past so scientists could piece together how the planet evolved.
Mars didn't dry up in one go
The Perseverance rover has just landed on Mars. Meanwhile, its precursor Curiosity continues to explore the base of Mount Sharp (officially Aeolis Mons), a mountain several kilometers high at the center of the Gale crater. Using the telescope on the ChemCam instrument to make detailed observations of the steep terrain of Mount Sharp at a distance, a French-US team headed by William Rapin, CNRS researcher at the Institut de Recherche en Astrophysique et Planétologie (CNRS/Université Toulouse III/CNES), has discovered that the Martian climate recorded there alternated between dry and wetter periods, before drying up completely about 3 billion years ago.
Lunar brightness temperature for calibration of microwave humidity sounders
Calibration and validation (CAL/VAL) is a key technology for quantitative application of space-borne remote sensing data. However, the complex space environment can cause many uncertainties and degrade calibration accuracy. In-flight calibration is always needed. The thermal emission of the Moon is stable over hundreds of years because there is no atmosphere and no significant physical or chemical change on its surface. The deep space view of the Microwave Humidity Sounder onboard NOAA-18 has viewed the Moon many times every year. Under solar illumination, the lunar surface shows stable and periodical variation in microwave brightness temperature (TB). The Moon is a potential calibration source for thermal calibration
The related work was published in Science China Earth Sciences as "Calibration of the space-borne microwave humidity sounder based on real-time thermal emission from lunar surface." Based on the heat conductive equation, the temperature profiles of lunar regolith at different regions and local time are simulated numerically with the real-time solar radiance and angle of incidence.
Satellites monitor Mount Etna’s unpredictable behaviour
Italy’s Mount Etna, Europe’s most active volcano, has recently been on explosive form, with 17 eruptions in less than three months. Instruments onboard three different satellites orbiting Earth have acquired imagery of the eruptions – revealing the intensity of the lava-fountaining eruptive episodes, known as paroxysms.
Ariane 6 pre-flight 'plumbing' tests
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Ariane 6 pre-flight 'plumbing' tests Optical links to connect air passengers securely
Flight passengers will be able to connect securely to their families and colleagues on Earth via sophisticated laser systems.
SpaceX launches 60 Starlink communications satellites
SpaceX launched 60 more of the company's Starlink Internet communications satellites into orbit from Florida on Wednesday.
A Falcon 9 rocket carrying the spacecraft lifted off as planned at 12:34 p.m. EDT into a blue April sky with few clouds.
"Falcon 9 has successfully lifted off from Cape Canaveral Space Force Station carrying our stack of Starling satellites to orbit," SpaceX SKF bearings help Mars Rover collect rock and regolith samples on the planet's surface
Enabling the Mars Rover's core operations in the harsh environment on Mars are Kaydon RealiSlim thin-section ball bearings, designed and manufactured by SKF at the company's global thin-section bearing engineering center in Muskegon, and its recently expanded manufacturing hub in Sumter, USA.
These highly engineered components contribute to the survival of the rover's main robotic arm, sam