Articles
Earth’s Great Gift to the Moon: Water
Tiny samples from Apollo moon rocks help solve an ancient myatery
Asteroid in a Bag: NASA’s Long, Strange Trip
The space agency's latest plan for a manned mission—including capturing an asteroid and towing it to the moon—begs crddulity
Where in the Universe Is Voyager? The Surprising Showdown over Where Our Solar System Ends
Voyager 1 entered interstellar space, and then—oops!—it didn't
Humanity Leaves the Solar System: 35 Years Later, Voyager Offically Exits the Heliosphere
It is a historic threshold: An object created by humans has exited our solar system. For years now, scientists have speculated as to when the Voyager I...
A Living Ocean on a Jovian Moon?
Jupiter's watery Europa may be the best bet for life elsewhere in the solar system
Photo Essays
Voyager, 6 Billion Miles Later: Photos from the Depths of Our Solar System
For 20 years, America’s Voyager spacecraft have been flying toward the edges of our solar system. TIME surveys the most notable interstellar scenes captured by...
The Big Bang
Scientists crash a probe into a comet to discover the origins of the solar system
