Magazine

Solar System

The surface of Neptune’s moon Triton is partially made up of methane. If an asteroid were to collide with it, would that touch off an explosion?

Solar System

Could there be large amounts of water in deep aquifers on Mars?

Planets

Uranus’ turn in the Sun

Science

Bob Berman’s Strange Universe: Applying Occam’s razor

Solar System

Ask Astro web extra: What is the nearest star to the Sun? How far away is it?

Science

Imagers capture the sky

Science

Who was the first person in history to accurately predict a solar eclipse?

Alien Life

Alternative chemistries for life

Stars

Getting a kick out of merging

Stars

Track down the original Cepheid variable

Robotic Spaceflight

NASA’s next Moon mission

Stars

Do astronomers name and catalog individual stars in other galaxies?