Bursts of star formation and tails of debris litter the cosmos whenever galaxies meet.
Unexpected phenomena have steered astronomy in new directions.
Ready, set, boom!
An expanding bubble enriches the galaxy and may help life begin.
Astronomers find that comets are not the pristine relics we thought they were.
Discover fall’s splendid sky sights
Colorful doubles and stellar death shrouds are among tonight’s deep-sky wonders.
Astronomy editors went to two exotic locales to bask in the Moon’s shadow.
A small telescope and bright sky don’t stop this imager’s hunt for the big and beautiful.
Explore the sky with classic glass
Telescopes from the golden age of observing provide collectors with great views.
This month in Astronomy
Bob Berman’s strange universe
Glenn Chaple’s observing basics
Phil Harrington’s binocular universe
Open a star window
The sky this month