Stars of the Neighborhood (ePub)
As you get to know your stellar neighborhood, you will find some bizarre and fascinating stars, planets and other strange things. Each one has its own personality, and we are starting to learn more about them, individually.
One of the...
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(science article)
As you get to know your stellar neighborhood, you will find some bizarre and fascinating stars, planets and other strange things. Each one has its own personality, and we are starting to learn more about them, individually.
One of the first things you will notice is that more than two-thirds of the known nearby stars are red dwarfs (not dwarves!). These stars are much smaller, cooler and dimmer than Sol (our Sun). In fact, they are only red hot, which is pretty cool for a star. The color of a star depends mainly on the temperature of its outer layers. Because red dwarfs are so dim, even those nearest to us cannot be seen without a telescope.
Our neighborhood also includes a few Sol-like stars, some white dwarfs, which are small and hot, and brown dwarfs, small and cold. Brown dwarfs are not really considered stars, since they are not massive enough to sustain fusion of their most abundant element, hydrogen, into helium. There are probably many smaller, dimmer objects, yet to be discovered. We don't always discover the nearest things first.
Mathematician -- PhD 1992
University of Wisconsin-Madison
Astronomy is my hobby. Kind of an obsession at times! Not so much about where to point my telescope, but more learning about exotic places.
I started out in Topology and Analysis at Texas Tech, then went to Wisconsin and switched to Applied Math. Started working on a PhD thesis in General Relativity, then changed to Dynamical Systems, and ended up with a PhD in Differentiability Theory. Studied a lot of Classical Physics.
I also worked as a radar engineer in the missile defense industry for 10 years. This gave me an appreciation of the "real world."
Other hobbies: genealogy, coin collecting, science fiction, philosophy, hiking.
- Autor: William Haloupek
- 2013, Englisch
- Verlag: William Haloupek
- ISBN-10: 1301684066
- ISBN-13: 9781301684069
- Erscheinungsdatum: 30.05.2013
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- Dateiformat: ePub
- Größe: 1.05 MB
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- Vorlesefunktion
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