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Comets/Asteroids

Radar has revealed evidence of an environmentally significant impact that probably occurred during the last 2.6 million years.

Charles Q. Choi, Contributor

Scientists are training computers to help us stop asteroids from crashing into our planet.

Yuen Yiu, Staff Writer

Explore the stars that surround us in this month's slideshow.

Abigail Malate, Staff Illustrator

The Outer Space Treaty, which turns fifty this year, laid the basic ground rules for the exploration of the final frontier.

Catherine Meyers, Staff Writer

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