The discovery suggests a chemical compound exists on two frigid, geologically alien worlds—yet remains unknown to science.
Congress has ended support for the existing Mars Sample Return programme. Perseverance's carefully documented collection now waits on Mars with no approved retrieval mission.
Textbook diagrams enlarge asteroids until the belt looks packed. NASA's own scale estimates show why spacecraft cross it safely and why planned flybys require precise targeting.
The Sun's outer atmosphere reaches millions of degrees while the surface below is far cooler. Waves, reconnection and new spacecraft measurements explain parts of the paradox, but not yet all of it.
Apophis will pass inside geostationary altitude in April 2029, giving OSIRIS-APEX a rare chance to inspect how Earth's gravity changed it.
Europa Clipper is following a 1.8-billion-mile route to Jupiter, where 49 close flybys will test whether Europa's hidden ocean could support life.
Helium escaping from LHS 1140 b has provided the first firm atmospheric detection for a rocky planet in a habitable-zone orbit, while leaving its surface conditions and lower atmosphere unresolved.
For the first time, a lunar impact comes with a complete history, tracked from Earth to moon.
The Saturnian moon's rapid retreat from its planet rewrites theories about how it formed and where it has spent its 4.5-billion-year history.
A laboratory experiment found that Europa-like salty ice emits different visible glows under high-energy electrons, offering a possible new way to map the moon's surface chemistry in darkness.
Four Cassini bistatic radar flybys found millimetre-scale roughness across Titan's open seas and rougher estuaries consistent with methane-rich inflow meeting more ethane-rich liquid.
Nature's paradox: the world's most radioactive region has become a thriving wildlife sanctuary, with wolf populations flourishing at seven times the rate of protected reserves.
Even cosmic collisions can't explain how Titan keeps replenishing the methane that fuels its alien weather—leaving scientists hunting for a deeper mystery.
Two competing theories suggest Europa might harbor life—but not necessarily the way scientists expected.
The rocket maker's debut as a public company was turbulent—and a massive share unlock could make things far worse.
This visitor from the deep freeze of interstellar space suggests our cosmic neighborhood may be far colder and more alien than we ever imagined.
