Time.com
MY ACCOUNT
SIGN IN
SIGN OUT
-->
SUBSCRIBE
SUBSCRIBE
Home
U.S.
Politics
World
Business
Tech
Health
TIME Health
Entertainment
Science
Newsfeed
Living
Sports
History
The TIME Vault
Magazine
Ideas
TIME Labs
Photography
Videos
The Goods
Press Room
The 100 Most Influential People
Next Generation Leaders
Person of the Year
Top of the World
Subscribe
Newsletters
Feedback
Privacy Policy
Your California Privacy Rights
Terms of Use
Ad Choices
RSS
TIME Apps
TIME for Kids
Advertising
Reprints and Permissions
Site Map
Help
Customer Service
© 2019 TIME USA, LLC. All rights reserved.
Subscribe
Subscribe
The Big Bang
Scientists crash a probe into a comet to discover the origins of the solar system
Email
share
LinkedIn
StumbleUpon
Reddit
Digg
Del.i.cious
Tweet
Get the Latest Photos from Time.com
Get TIME photos and pictures of the week delivered directly to your inbox.
