The time evolution of the stellar spectra occulted by the planet as a function of orbital phase, in the wavelength range 5882–5902 Å, which includes the sodium doublet. The positions
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Two examples of Martian dunes with linear dune gullies. North is up in both images. (a) Linear dune gullies on a dune field in Galle crater (HiRISE image ESP_077477_1280_MIRB). (b)
Top: Simulated EVE observation of an exocomet transit of a K7V at 100 pc expected during a 20 d stare at ∼20 Myr Theia 43 or 45 associations. We scale
Mass distribution inside the plume (left) and leaving the plume (right) for the different particle sizes along the plume vertical extent for the low (top) and high (bottom) plume cases.
The tug-of-war over space shuttle Discovery is becoming more volatile. Discovery — the crown jewel of the Smithsonian Institution’s Udvar-Hazy Center in Chantilly, Virginia — is the subject of a
The moon is about to become the first extraterrestrial mining frontier, and most investors may be backing the wrong players. While venture capital pours into space startups promising to revolutionize
WASHINGTON — Vantor, the commercial Earth intelligence firm formerly known as Maxar Intelligence, has begun providing high-resolution space-to-space imagery to the U.S. Space Force, filling a gap in military surveillance
For decades, satellites orbiting hundreds of miles above Earth have provided scientists with a crucial vantage point to monitor our planet’s frozen landscapes. Missions like NASA’s Landsat and the European
The European Space Agency’s Mars Express orbiter took this stunning view of the ice-filled Korolev Crater on Mars in 2018. New research shows that microbes on Mars – either ancient
Mysterious gullies on Mars appear to have been dug, but by whom or what? Video via Faculty of Geosciences Utrecht University. Gullies are common on Mars. Flowing water likely created
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