When galaxies become cannibals

Some galaxies harbor a sinister secret: They’ve eaten their siblings.

Explore the impact that killed the dinosaurs

As scientists drill into Mexico’s Chicxulub crater, they expose geologic clues about the massive impact that transformed Earth.

How to observe colorful open clusters

You think star clusters are boring? Wait until you see these colorful gems – they’ll knock your socks off.

How moon dust will put a ring around Mars

Phobos, a moon of Mars, is destined to be shredded, changing the Red Planet forever.

Meet the master of stellar vistas

How I took the astroimaging road less traveled.

I’ll have a Cosmo

By combining science with a few stellar brews, Astronomy on Tap has become a hit.

Putting iOptron’s new mount to the test

Easy setup, whisper-quiet operation, and superb accuracy make this mount a winner.


Sky this Month
StarDome and Path of the Planets

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