Magazine

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?

Human Spaceflight

Return to the Moon

Human Spaceflight

Should we go to the Moon first?

Solar System

Ask Astro web extra: How warm does it get on Mars?

Science

Free Preview: Bob Berman’s Strange Universe, “Edges of the universe”

Stars

Free preview: David H. Levy’s Evening Stars, “Celebrate Galileo Galilei”

Science

How do scientists determine the elevations of mountains and other topography on the Moon, Mars, and other places where there is no sea level as the reference point?