Mrs.Rowse Borelli
English 10-F
12 April 2017
Exoplanets
An exoplanet can be defined as a planet that orbits a star outside the solar system. One of the many exoplanets that could possibly be habitable in the near future are far away. For example, Kepler-186 is around 500 light years aways to put that in perspective that is around 5,878,625,373,183.607731 Miles away. That is why we know so little about these planets that could support life on them.
Starting off, what is some of the criteria that is needed to live on a planet. The University of Utah put it best when they described what is needed. One of the most basic needs to live on a different planet is they need to be a comfortable distance away from their star that is …show more content…
Just like earth things change on those planets so if scientists telescopes do not detect life right now that does not mean there was no life ever on some of these planets. If one day we were able to visit these planets we would be able to detect certain physical and chemical evidence of life before. Even a planet that has no life today may hold evidence of ancient life forms from past generation. For example, archaeologists can detect that dinosaurs were alive along time ago even though they are long gone by finding physical evidence like fossils or chemical evidence from them. Another reason why Astrobiologists (Scientists that study the life) do not know right away about a planet, is they look at its current conditions, and for signs that it could have been habitable in the past. Water leaves behind evidence of possible life. Mars, for example, has what looks like dry river and lake beds, making astrobiologists wonder if the planet could have once been with life that is why many people talk about Mars. If Mars was, there may be enough remaining liquid water to sustain microbial life deep underground or under the frozen ice caps (The University of …show more content…
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