Space Exploration

Discover timelines, data, slideshows, and features about space exploration, telescopes, the Columbia Disaster, Apollo 11, and more.

What Curiosity Can Tell Us About Mars

MESSENGER to Enter Mercury's Orbit

Timeline: Famous Firsts in Space Exploration

Slideshow: First People in Space

Slideshow: NASA Ships and Space Stations

New Planetary System

After 20 Years, Barbra Morgan Becomes First Teacher in Space

To the Moon and Mars

Hubble Space Telescope

Some Giant Telescopes

The Dawning of the Space Age

First U.S. Satellite

Major Space Explorations

U.S. Unstaffed Planetary and Lunar Programs

Notable Unstaffed Lunar and Interplanetary Probes

U.S. Staffed Space Flight Programs

Soviet Staffed Space Flight Programs

China's Spacecraft Progress

Notable Staffed Space Flights

Moon Walks

A Human Mission to Mars? Not Yet

Space Websites

Apollo 11

Space Shuttle timeline

Columbia Disaster

Space Quiz from NASA

Health & Science