MegaStructures

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Archive for the ‘Spectacular Galaxy’ Category

Things out there

Nebula

Posted by zenerwave on July 4, 2009

Nebula is an interstellar cloud of dust, hydrogen gas, helium gas and plasma. Originally nebula was a general name for any extended astronomical object, including galaxies beyond the Milky Way (some examples of the older usage survive; for example, the Andromeda Galaxy was referred to as the Andromeda Nebula before galaxies were discovered by Edwin Hubble). Nebulae often form star-forming regions, such as in the Eagle Nebula. This nebula is depicted in one of NASA’s most famous images, the “Pillars of Creation”. In these regions the formations of gas, dust and other materials “clump” together to form larger masses, which attract further matter, and eventually will become big enough to form stars. The remaining materials are then believed to form planets, and other planetary system objects.

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Asteriods – The Dangerous one

Posted by zenerwave on July 4, 2009

Asteroids are rocky and metallic objects that orbit the Sun but are too small to be considered planets. They are known as minor planets. Asteroids range in size from Ceres, which has a diameter of about 1000 km, down to the size of pebbles. Sixteen asteroids have a diameter of 240 km or greater. They have been found inside Earth’s orbit to beyond Saturn’s orbit. Most, however, are contained within a main belt that exists between the orbits of Mars and Jupiter. Some have orbits that cross Earth’s path and some have even hit the Earth in times past. One of the best preserved examples is Barringer Meteor Crater near Winslow, Arizona.

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Things Out There

Posted by zenerwave on July 4, 2009

These are the pics of different galaxies present in the universe with many other things out there. Enjoy the view of world outside.

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