Are We Alone

Topics: Solar System, Milky Way, Sun Pages: 2 (484 words) Published: May 7, 2013
Are We Alone
The question “Are we alone?” cuts to the big question on how we see ourselves in the Universe, and I think we’re not. For one factor, the Universe is infinite. Mathematically speaking, if the chances of another planet just like earth to exist it would be .00000001%. The Universe is so big that there could be billions of planets just like our own, and by that I mean that can support life. In our galaxy alone, the Milky Way (which we don’t even know what it looks like) has proximately 200-400 billion stars. That means that at least 10 billion stars should have planets in the habitual zone; and there being over 200 billion other galaxies that contain hundreds of billions of stars. The nearest star to our own solar system is the Alpha Centauri, which may have possible planets that can harbor life but it’s so far that it would take 4.73 light years, but it would take 80 years using the speed of our latest technology since we haven’t achieved the speed of light yet. The numbers alone make thinking of aliens perfectly rational. There are even some signs of possible life in our solar system ranging from microorganism on mars, to a water world on of Jupiter’s moon. Europa, is covered in ice and some scientist believe under the ice should be liquid water which is essential for life. Intelligent life is going to be a little more rare, and some people might ask if the universe is so big and filled with other life why haven’t we’ve been contact with another alien life, it’s just the universe is too vast. Life may come and go in the blink of an eye, speaking universe time. Just a couple of years ago we actually discovered how to locate other planets, and since then we’ve found a couple of candidates, not perfect, but planets in the habitual zone. Keppler 22b is one of the planets that were recently discovered. It happens to be twice the size of earth, and is 600 light years away. It is the first planet that is actually in the goldlie-lock zone (habitual zone),...
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