Wiki Word:   Universe

 

 

 

What is the universe?????

 

The universe is EVERYTHING. Everything you look at and even things that you can’t see are all apart or the universe. The solar system and its planets, Mercury, Venus, Earth, Mars, Jupiter, Saturn Uranus, Neptune, and Pluto. It also includes even cooler stuff beyond the Milky Way galaxy.  Like black hole, supermassive black hole.

 Here are some facts about the universe and stuff in it. click here for a slide show presentation on the facts.

·        There are an estimated 50 thousand million galaxies in the universe, with the typical galaxy containing 50 thousand million to 100 thousand million stars. It is estimated that there are 10²² stars in total in the universe.

 

·        The matter in the universe is so thinly dispersed that the universe can be compared with a building twenty miles long, twenty miles wide, and twenty miles high, containing only a single grain of sand.

 

·        A massive star has a shorter lifetime than a less massive star. The more massive a star, the more tightly its gravity pulls it together, the hotter it must be to keep it from collapsing, and the more rapidly it uses up its hydrogen fuel. The reason there are so few really massive stars is that they do not live very long, as little as a million years. For comparison, our sun has an expected lifetime of about 11,000 million years.

 

·        Can you hear in space? In theory, if there is nothing to receive the sound, there is no sound. Because there are no "air waves" in space to conduct the sound, it would not carry. So, the object would make a noise, but it would not carry to any receiver, and no one would hear it.

 

·        About 25% of the universe consists of "dark matter", and about 70% consists of "dark energy", leaving only about 5% of the universe visible to us

 

·        The most distant object ever observed is estimated to be around 13,000,000,000 light-years away. Discovered by the Hubble Space Telescope in 2004, it is located behind the galactic cluster Abell 2218, which bends the object's light. It is a small, energetic galaxy whose light that is seen now would have set out when the universe was just 750 million years old.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

i got this 1ST pic from http://www.wired.com/news/images/full/universe1_f.jpg

The Ring Nebula, Oct. 1, 1998: The NASA Hubble Space Telescope has captured the sharpest view yet of the most famous of all planetary nebulae, the Ring Nebula (M57). In this image, the telescope has looked down a barrel of gas cast off by a dying star thousands of years ago. Credit: NASA Headquarters - Greatest Images of NASA

to see more cool pics like this click HERE!!!!

We are studying this because it's the uviverse. everything is inside of the universe and we have to understand where everythin comes from in order to KNOW what it really is, and how things happen.