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Mercury Orbits the Earth
In February 1962--just nine months after President John F. Kennedy called for the U.S. to put a man on the moon before 1970--Mercury astronaut John Glenn became the first American to orbit the Earth....(Continue Reading)

Mercury Orbits the Earth
In February 1962--just nine months after President John F. Kennedy called for the U.S. to put a man on the moon before 1970--Mercury astronaut John Glenn became the first American to orbit the Earth....(Continue Reading)

Apoapsis - Space and Astronomy Definition
apoapsis - from an ever growing glossary of space and astronomy definitions. Find the definitions for apoapsis and all your space and astronomy related words in this online dictionary - glossary. the point in the orbit farthest from the body being or...(Continue Reading)

Aphelion - Space and Astronomy Definition - Online Dictionary and Glossary Definition of Aphelion
aphelion - from an ever growing glossary of space and astronomy definitions. Find the definitions for aphelion and all your space and astronomy related words in this online dictionary - glossary. opposite of perihelion. The point in its orbit where a...(Continue Reading)

On This Date in History - April 3
Astronomy and space related events which occurred On This Date in History - April 3. Also astronomy and space related quotations, fascinating facts, and word definitions....(Continue Reading)

Hubble's Deepest View Ever of the Universe Unveils Earliest Galaxies
Hubble's Deepest View Ever of the Universe Unveils Earliest Galaxies. Astronomers at the Space Telescope Science Institute today unveiled the deepest portrait of the visible universe ever achieved by humankind. Called the Hubble Ultra Deep Field (HUD...(Continue Reading)

Citizens ask Congress to plan for asteroid impact survival
In a letter to Congress, a group of space-savvy Americans have urged the U.S. government to begin immediate preparations to deal with the threat of near Earth-approaching objects, also called NEOs....(Continue Reading)


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Earth Satellites
… we have aphelion and perihelion. For orbits around Earth it is apogee and perigee. What body do aposelene and periselene apply to? …

SPACE.com -- More Moons Around Earth? Its Not So Loony
The 3-mile-wide (5-km) satellite, which takes 770 years to complete a horseshoe-shaped orbit around Earth, is called Cruithne and will remain in a suspended …

The Earth's Orbit
Like all planets in our solar system, the Earth is in an elliptical orbit around our Sun. In Earth's case, its orbit is nearly circular, …

 

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