Scientists unearth ancient impact’s secrets
A giant meteorite struck Earth 1.8 billion years ago, creating Sudbury Basin. What does this event tell us about early Earth?
How the Sun will die
When Sun-like stars exhaust their fuel, they cast off shells of gas, creating colorful fireworks.
How life could thrive on hostile worlds
Extreme organisms on Earth show us just how weird life elsewhere could be.
Watch a video of the ecosystem along the hydrothermal vents of the Galápagos Rift.
Astroimaging over ancient Greece
A Mediterranean astrophotographer frames celestial portraits with millennia-old ruins.
Anthony Ayiomamitis shares 10 more of his celestial images.
Meade’s LX90-ACF eliminates coma
High portability, easy setup, and high-quality optics make this scope a winner.
This month in Astronomy
Bob Berman’s strange universe
Stephen James O’Meara’s secret sky
The sky this month
Glenn Chaple’s observing basics
Phil Harrington’s binocular universe
It’s a Wonderful Star