On July 15 2025, the four astronauts from the private Axiom-4 space mission splashed down in the Pacific Ocean off the coast of California, concluding their two-week long stint aboard
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Telluric-corrected HARPS observations at the sodium doublet, obtained on two nights nearly one year apart, vertically offset for clarity. In both nights, significant disk line absorption is visible, as well
The four astronauts of Axiom Space’s latest private mission have concluded their stay aboard the International Space Station (ISS). Ax-4’s SpaceX Crew Dragon capsule, named Grace, undocked from the ISS
WASHINGTON — SpaceX provided a lift for a competitor in the satellite broadband sector with the Falcon 9 launch of spacecraft for Amazon’s Project Kuiper constellation July 16. To continue
As different nations begin conducting operations on the lunar surface, humanity’s penchant for geopolitical struggles will likely be along for the ride. Tension between nations and/or corporations could grow. There
The Artemis II crew (from left to right) CSA (Canadian Space Agency) Jeremy Hansen, mission specialist; Christina Koch, mission specialist; Victor Glover, pilot; and Reid Wiseman, commander, don their Orion
Early risers will get a rare opportunity to see something extraordinary in the early hours of July 18 — the dark shadow of Saturn’s largest moon, Titan, sweeping across the
EarthSky’s Dave Adalian talks with astrophysicist David Rubin about new evidence that dark energy might evolve over time. Type Ia supernovae let us precisely measure cosmic distances, and gave us
Uranus and its four largest moons — NASA Scientists using NASA’s Hubble Space Telescope went looking for evidence of one phenomenon and found quite another. The research team studied the
The Earth’s magnetosphere is a giant magnetic field that arises from the flow of material deep inside the planet. Because the flow of material isn’t constant, the strength and shape
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