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onebadasp's definitions

Supergiant

A very large star, in fact the most massive of the bunch. They are about 10 to 70 times the size of our Sun and can be hundreds of thousands of times brighter. Because of their extreme mass, they are very short lived compared to other stars with a life span of only 10 million years.

Because they live fast, die young and leave a beautiful nebula in their wake, supergiants can only been seen in places like the arms of spiral galaxies, open clusters and irregular galaxies. Places where new stars are born frequently.
Rigel, the brighest star in the constellation Orion is a typical blue-white supergiant, whereas Betelgeuse and Antares are red supergiants.
by OneBadAsp October 21, 2006
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Expanding Universe

The fleeing of galaxies from each other in the aftermath of the Big Bang.
We live in an expanding universe.
by OneBadAsp October 21, 2006
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Multiverse

The hypothesis in which our universe turns out to be one among an enormous number of seperate and distinct universes that have evolved down though the aeons. Most universes are dead and uninteresting. Only a tiny subset do the laws of physics promote the emergence of stars, planets and life.
There is nothing special about the status of our universe within the infinity of universes that constitute the multiverse.
by OneBadAsp October 21, 2006
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Space Junk

The dead satellites, discarded rocket casings, and so forth that orbit the Earth, creating a hazard for space shuttles.
With all the space junk that gridles the planet it is a wonder that NASA hasn't done more to clean it up.
by OneBadAsp October 21, 2006
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Universe

All there is.

This is a flexable term, which once was used for what we now call the solar system. Later, it was used for what we call the Milky Way. Now it is used for the sum total of all the galaxies, of which appears to be about ten billion of them.
The more we learn, the larger our universe seems to get.
by OneBadAsp October 21, 2006
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Supernova

The cataclysmic explosion of a massive star. A Supernova may, for a short time, out shine an entire galaxy of a hundred billion ordinary stars. It is thought to leave behind a highly compressed neutron star.
Our Sun could never go supernova because it is simply too small. Only a massive star could die as a supernova.
by OneBadAsp October 21, 2006
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Comet

A small icy body--usually only a few kilometers across--that orbits a star. Most comets orbit the Sun beyond the outermost planets in an enormous cloud known as the Oort cloud.
Like asteroids, comets are builders' rubble left over from the formation of the planets.
by OneBadAsp October 21, 2006
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