Outer Space

NASA plans to send probe deep into interstellar space
More than 5,000 tons of space dust hit Earth every year
Scientists measure Mars’ core — and it is shockingly big!
A distant exoplanet made itself a second atmosphere
Building infrastructure on Mars is tricky — these bugs could help
Icelandic rocks hold clues to Mars’ ancient climate
This cloudless “hot Jupiter” is unlike any known exoplanet
We're floating in 6,000 tons of junk
Hacking satellites with $300 worth of TV gear 6:19
Citizen scientists helped NASA map our cosmic backyard