The Mars ESCAPADE mission will study the red planet's magnetosphere using a pair of small satellites. ESCAPADE will launch no earlier than spring 2025.
Want to do some cloudspotting on Mars? Researchers in Germany have created the new Cloud Atlas of Mars, with 20 years of images from the Mars Express orbiter.
Comet A3 Tsuchinshan-ATLAS survived its rumored disintegration and may be the brightest comet of the year this September and October. Finder maps here.
NASA scientists say they have confirmed a theory about how Martian 'spiders' form in the southern polar regions: erupting bursts of carbon dioxide gas.
Astrophysicist Jonathan McDowell will discuss humans' unexpected impacts on space LIVE with EarthSky at 12:15 p.m. (17:15 UTC) on Monday, September 16. Join us!
Mars' polar caps are generally similar, but they also differ in some some ways. A new study shows how the differing sublimation of CO2 ice plays a role.
An unusual occurrence of gravitational lensing created this view of a question mark galaxy. The discovery reveals details about early galactic evolution.