Astronomers in Germany say that 2 possible giant exomoons probably don't actually exist. That's disappointing, but there are still some other candidates.
Do the plumes on Enceladus contain evidence of life from the moon's ocean? A new study shows that amino acids could survive and be detectable by spacecraft.
A study suggests our sun is about the lowest mass star that - when it dies - produces a visible, though faint, planetary nebula. What happens when our sun dies.
Researchers at Johns Hopkins are simulating haze on water worlds. The haze muddles observations but can also help determine if an exoplanet is habitable.
Comet Halley reaches its farthest point in orbit from the sun on December 9, 2023. It'll then begin its return trip to the inner solar system, arriving in 2061.
There's a dark region near the Milky Way's center known as the Brick. This cold cloud of gas and dust should be forming stars, but, strangely, it's not.
NASA's James Webb Space Telescope has found molecular building blocks of rocky exoplanets in a region previously thought to be too extreme and hostile.