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Star Astronomy

Astronomy, like the universe, is a vast subject.  Limiting to star astronomy still leaves a lot of things to cover.  There are ample phenomenons and objects in just our own solar system to keep someone bust for an entire life time.  Many people choose, then, to specialize, to focus their attention on the brightest objects that are often the first space objects that peak people’s interest in astronomy – the stars.

Our sun is 94,000,000 miles from Earth, and that’s the closest star we know.  It generates an incredible amount of heat to reach all that distance.  Our own sun contains just over 98% of the total mass in the solar system.  That includes all the other planets even with huge Jupiter and Saturn on our side.  The sun could hold over 1.3 million Earths.  The heat is generated from a nuclear reaction in the sun’s core where the pressure is 340 billion times the pressure on Earth and temperatures reach 27,000,000F.  That would burn toast to a crisp instantly.

The sun is the most studied star we know.  It’s about 250,000 times closer to Earth than the next known star.  But when you travel far from Earth star astronomy really starts to hum.  From the Earth about 5,000 stars, every one in our own Milky Way galaxy, can be seen with the naked eye.  More of the 1×10^22 stars in the universe can be seen through a telescope.  For those who care that’s a 1 followed by 22 zeros.  In fact, even a small telescope opens the eyes of an amateur star astronomy enthusiast to hundreds of thousands of stars.  Imagine that!  Professionals using larger telescopes can see other galaxies that contain over 200 billion stars. It would take many lifetimes just to count that high.

Star astronomy experts have now proven that many other stars have planets.  Stars wobble when planets orbit them, and that wobbling can be measured.  In 2008, for the first time, astronomers took visible light photographs of planets orbiting distant suns.  Maybe one of those planets contains intelligent life.

Will we have a run-in with Romulans next month?  Probably not.  But star astronomy and its study of our own Sun and all the stars in the universe will continue.  Maybe it also continues somewhere on another planet. We might be under observation from one of those distant planets!

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