Tag Archives: blog4

Aether And The Celestial Region

Posted on February 20, 2013 by jacksonlangham

  Picture Source Aristotle accepted the ideas of fire, air, earth, and water. He claimed them to be terrestrial elements due to their variable nature. These elements could be broken […] Continue reading →

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Interferometry

Posted on February 20, 2013 by eaangel

The concept of interferometry is really cool to me.  The fact that multiple telescopes can be combined to make larger images makes perfect sense, but I have trouble wrapping my head around the idea that even though there are huge … Continue reading → Continue reading →

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White Holes?

Posted on February 20, 2013 by charlesbcochran

The idea of a black hole has been along for a long time, as a region in space having a gravitational field so intense that no matter can escape from it. These regions have not been directly discovered so to … Continue reading → Continue reading →

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Conservation of Angular Momentum and Kepler’s Second Law

Posted on February 19, 2013 by YanruChen

Conservation laws are very important laws for celestial objects in the universe. Without conservation laws, all these celestial objects will not obey predictable motions as they do in this universe. I am going to talk about conservation of angular momentum in this post. Any objects orbiting or rotating have angular momentum. To change angular momentum […] Continue reading →

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Dark Matter and the Missing Mass Problem

Posted on February 19, 2013 by rtjobe

We have a huge problem. Like a we-seem-to-be-missing-95%-of-the-universe kind of problem.  If you look at the way that galaxies are constructed you will notice that they are very bright in the center and tend to get dimmer as you travel outward, indicating there must be more mass in the center than the outside.  This would […] Continue reading →

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Using Paintballs to Deflect Asteroids

Posted on February 19, 2013 by AlanL

As you probably know on Friday February 15th there were two meteors heading Earth’s way. One of which crashed in Russia injuring over 1,000 people and the other missed Earth by 17,000 miles. The one that hit Russia was only 1.5 the size of a school bus while the other was 3 times that. Obviously […] Continue reading →

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Dark Matter vs Dark Energy

Posted on February 19, 2013 by fathomingthestars

In my previous post, I wrote about dark matter and how we can infer its existence through gravitational lensing.  Here, I will more fully explore what dark matter is and what dark energy is. Dark matter, as the name implies, is matter that is dark and cannot be seen.  “Seen” here does not mean visible […] Continue reading →

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Happy 540th Birthday Copernicus!

Posted on February 19, 2013 by juliettealper

Today, February 19, happens to be Nicolaus Copernicus’s 540th birthday. Google honored him by making their icon a heliocentric model. I thought it was fitting to talk a little about his accomplishments. One of the most interesting facts about Copernicus was that he completed all of his observations with his naked eye. Copernicus was one […] Continue reading →

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A Young Black Hole?

Posted on February 19, 2013 by mirandaskunz

As viewed from Earth, most black holes are about 17,000 to 21,000 years old. Recently, however, NASA scientists discovered what may be an infant black hole (pictured below). This black hole is only about 1,000 years old as seen from Earth and is located 26,000 light years away. It is left over from the supernova […] Continue reading →

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A Young Black Hole?

Posted on February 19, 2013 by mirandaskunz

As viewed from Earth, most black holes are about 17,000 to 21,000 years old. Recently, however, NASA scientists discovered what may be an infant black hole (pictured below). This black hole is only about 1,000 years old as seen from Earth and is located 26,000 light years away. It is left over from the supernova […] Continue reading →

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