A mobile laboratory the size of a washing machine made history Wednesday when it completed a slow-motion descent to the surface of a comet 311 million miles from Earth.
The countdown has begun. In less than 24 hours, the European Space Agency's Rosetta mission will attempt to put a laboratory on a comet.
Claudia Alexander has spent the last 15 years of her life waiting for this moment: landing a spacecraft the size of a washing machine on the surface of a speeding comet.
Are there really 8 million rats living among the 8 million humans of New York City?
This month marks the 40th anniversary of the discovery of Lucy, the partial skeleton of an ape-like creature that walked upright 3.5 million years ago. The 1974 find would forever change humanity's understanding of where our species came from and how Homo sapiens evolved.
Space can be a spooky place, if you know where to look.
Some people might travel to tropical islands to discover new species. Not Jeremy Feinberg.
Scientists have discovered two viruses that were preserved for 700 years in frozen reindeer poop collected from northern Canada.