Tuesday, April 13, 2010

Celestial life

Can life on other planets exist? Since the dawn of times, our ancestors have looked into the sky with great wonders. As science progress, the dreams of celestial life forms are slowly shattering. Planets that meet the conditions for life are a scarce find in the universe. There are many that believe that the earth is unique. With the ways things are looking, life is impossible to find even if it is existing.

In the past century, technological advances have allowed us to look thousands of mile into space with one glance. With this we are allow to view celestial bodies and study them with ease. With this innovation also came disappointment, as we became more developed in astronomy, we also became more reluctant to believe in celestial life as we find more compelling evidence that proves that supposedly barren planets are actually; barren planets.

Many continue to hold high hopes and believe that these readings are untrue. The speed of light is the fastest anything could travel according to Einstein. The light we receive from our own sun takes days to reach us. This means that it could an image we see in space could be from a few centuries to a few million years late depending on how far away it is.

One light year is 5.8 trillion miles. It takes about 1 year for light to travel one light year. The closest galaxy to the milky galaxy is the Andromeda galaxy which is about 2.2 million light years away. This means anything we view in the Andromeda is 2.2 million years late. This means life could have developed there without our knowing and this also means that we have no hope of finding life in “real time” during our life span.

The possibility of life is shrouded in a never ending fog. We may never determine if any planets meet the conditions for life. Our path to discovering is blocked by two obstacle, time and space, which are essentially forces which humans cannot hope to take down and control.

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