james-webb

From Mars rock targeting to exoplanet spectra, AI is helping astrobiologists sort possible signs of life from chemistry that looks alive but is not. Here is what it does, what it has not done, and why the hardest step is still human.

Neural networks now sort galaxies, rank gravitational lens candidates, and flag changing objects in Hubble, Webb, and survey data. Here is what they do well, and where astronomers still check their work.

How the James Webb Space Telescope revealed galaxies from the universe's earliest years, transforming our understanding of cosmic history

Exomoons are moons orbiting planets beyond our solar system. None has been confirmed, despite two serious candidates, because their signals are tiny and easily mimicked. If they exist around giant planets, some could hold liquid water through tidal heating, even far from any star.

We've found over 5,500 planets orbiting other stars. Some are hot Jupiters, some are super-Earths, and a handful sit in habitable zones. Here's the science of finding them and the search for life elsewhere.