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Comet Hale-Bopp

Hale Bopp Comet Facts

Milky Way skyscape over Mangaia

Milky Way Galaxy: Facts About Our Galactic Home

An image of Halley's Comet taken in 1986.

Halley's Comet: Facts About The Most Famous Comet

Hubble Space telescope captured comet Shoemaker-Levy 9 colliding with Jupiter. The planet’s gravitational pull ripped the comet apart, resulting in 21 visible impacts.

Shoemaker Levy 9: Comet's Impact Left Its Mark On Jupiter

Nicolaus Copernicus Biography: Facts & Discoveries

Clyde Tombaugh telescope

Clyde Tombaugh: Astronomer Who Discovered Pluto

gps network

Navstar: Gps Satellite Network

Percival Lowell

Percival Lowell Biography

Telstar 1 Satellite

Telstar: Satellites Beamed 1st Tv Signals Across The Sea

3rd Place: Meandering Mississippi Landsat 7 Acquired May 28, 2003

Landsat: Four Decades Of Images And Data

black hole particles escaping

Black Holes: Facts, Theory & Definition

The Mir Space Station and Earth limb observed from the Orbiter Endeavour during NASA's STS-89 mission in 1998.

Mir Space Station: Testing Long Term Stays In Space

tycho brahe

Tycho Brahe Biography

space history, NASA, space station

Skylab: First U.S. Space Station

TV Review: 'Seconds from Disaster: Columbia's Last Flight'

Columbia Disaster: What Happened, What Nasa Learned

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