Wednesday, April 21, 2010

4q #1

1.Dark matter- Evidence for missing mass in galaxies. Dark matter is considered the missing mass within an area. It is apparently formed when dark energy particles collide they take electrons and positrons. Apparently it makes up about 25 percent of the universe's energy density

2.Dark energy- A mysterious force that is accelerating the growing of the universe. Some beleive that it halts the dark matter from expanding. With ever increasing technology we are slowly gaining the ability to see dark energy and dark matter. Apparently it will become key in reversing gravitational build up to stop the universe from tearing itself appart.

3.Search for aliens (SETI)- The search for aliens is always going to be a human objective. Just like with how humans search for new species of life on Earth we will search the farthest reaches of space to fint Extra Terrestrials. I think we will try anything from radio communications to personal meetings and beyond.

4.Mars- Mars is the red planet. It is one of Earth's nearest neighbors, and is the farthest terrestrial planet in our solar system. Once beleived to hold life Mars is a barren wasteland.

5.The Moon- The moon is something that has fascinated the people of earth for centuries. It is trapped in the earth's gravitaional field, and takes about 30 days for a full circulation. This is one of the few space items that human beings have landed on. The first contact with the moon was when Neil Armstrong stepped foot on the moon's surface in the early 1960s or late 1950's.

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