Articles

Planetary Clones

Discovering planets similar to the ones in our solar system can offer clues about our past and future–which is why scientists were excited after identifying...

See more Time.com Articles

Photo Essays

View more photo essays

Time.com Specials

Rocket Science: 10 Great Astronaut Movies

The launch of ‘Gravity’ has us looking back at a century’s worth of movies about the men and women who explore our solar system

View All Specials