Why Earth once sang a song of ice and fire

Jon Snow knows nothing about how the phenomenon of Snowball Earth is now thought to have occurred—and what it could mean for our future. 

This space oddity is science, not fiction

CFBDSIR 2149-0403 may not be a flying saucer, scientists are baffled as to whether it is a planet or a star. 

Saturn's moon Titan could turn life upside down

The presence of prebiotic organic compounds on Titan is slowly changing scientists’ idea of where life could possibly survive.

Why stardust is magical for astronomy

Science outshines magic when cosmic dust reveals secrets of the early universe.

These star clusters could rewrite astronomy

Star clusters were thought to be made up only of orbs around the same age … until now.

What Earth's oldest fossils could mean in the search for extraterrestrial life

Things crawling around on ancient earth could be a clue for whether there was ever life outside our planet.

TRAPPIST-1's eternal sunset hides deadly X-ray emissions

While it doesn't seem to get much light, the TRAPPIST-1 system basks in potentially planet-destroying X-ray emissions.

Can black hole belching teach us about galactic evolution?

What supermassive black holes spew could tell us more about galactic evolution.