Blog Post 1— The Vast Size and Scale of the Universe

A collection of many galaxies that shows the vastness of the universe

Humans have never travelled outside of our solar system because we are technologically unable to do so. Yet the solar system is only a tiny fraction of our galaxy, the Milky Way, and the Milky Way Galaxy is only a fraction of the observable universe. There are around 100 billion stars in our galaxy, and there are between 100 and 200 billion estimated galaxies in our observable universe. This means that nearly all possibilities of Solar System development are theoretically possible, causing many scientists to conclude that there is a good chance that extraterrestrial life exists.

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Seth Creech's ASTRO blog

My blog for Solar System class

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