Strange beads of light on Ganymede look strikingly like Earth’s auroras
Ganymede’s auroras have always stood apart for one simple reason: this is a moon, not a planet, and…
NASA’s TESS Mission Reveals the “Puffiest” Planets Ever Found
Data from NASA’s TESS (Transiting Exoplanet Survey Satellite) mission has revealed two new “super-puff” planets, giant worlds so…
Why Mars May Remain Uninhabitable for Centuries
Realistic image of a completely terraformed Mars. Credit: Daein Ballard Making Mars Earthlike is not impossible in principle,…
Scientists Spent 13 Years Bouncing Radar Off Europa. Here’s What They Found
It’s a good time to be a Europa fan—scientists keep announcing new insights into the distant, icy world.…
NASA’s Lucy Reveals Wobbling, Peanut-Shaped Asteroid
Even small asteroids lead complex lives. During its flyby of the asteroid Donaldjohanson last year, NASA’s Lucy spacecraft…
Amendment 59: Several Updates to the ROSES-25 Summary of Solicitation
Research Opportunities in Space and Earth Sciences (ROSES)-2025 is an ongoing “omnibus” or “umbrella” solicitation meaning that it…
Ancient Meteorite Reveals a Forgotten Planet That Existed 4.5 Billion Years Ago
An ancient meteorite may be the last surviving remnant of a vanished protoplanet. Credit: Stock A rare meteorite…
Astronomers Find Strongest Evidence Yet for Magnetic Fields on Alien Worlds
This illustration shows magnetic activity in an exoplanet. The planet is a gas giant like Jupiter, but it’s…
Rare meteorite points to a long-lost planet from our early solar system
A meteorite found in the Sahara is forcing scientists to rethink what kinds of worlds once circled the…
New analysis reveals why Ganymede has a magnetic field when other moons do not
Ganymede has long looked like a contradiction in orbit. Jupiter’s largest moon is the only moon known to…
Astronomers can now measure newborn planet mass from dusty stellar rings
A bright ring of dust circling a young star can look calm from far away. In reality, it…
Mars’ atmosphere is changing how scientists see unmagnetized planets
Mars does not have Earth’s kind of magnetic shield, so it has often been treated as the solar…