In the magazine’s special 500th issue, Astronomy’s editors share their picks for the 500 coolest things about space!

The Kuiper Belt where Pluto and Eris live might be more properly named for other astronomers with theories about this far-off zone of planets.

A new type of flame produced on the International Space Station (ISS) doesn't just look cool with its spherical blue glow—it is cool.

An unusually cool and surprisingly swirling jet of material spewed into space by a feasting black hole could provide insight into how these monsters feed and grow.

There's an astronomy app for every star gazing occasion in this list. Sleep in late and stay up later with these 11 great apps.

Astronomy = cool, cool cash Discover the average salary of astronomers, revealing insights on top-paying professions in astronomy and tenured positions.