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Showing posts from July, 2014

It was awesome to see an image from a past project used by my favorite astrophysics blogger.

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It was awesome to see an image from a past project used by my favorite astrophysics blogger.  Thanks Brian Koberlein for using a Gravitation3D picture and referring to the program!

Make your own solar systems and set them in motion here...  www.gravitation3d.com

Originally shared by Brian Koberlein

Accentuate the Negative

There’s news on the web that cosmologists have proven the existence of negative mass. The news is based upon an article that recently appeared on the preprint arxiv, and has not yet been peer reviewed. The article in no way proves the existence of negative mass, but rather demonstrates the theoretical possibility of a form of negative mass within general relativity. In other words, it is an interesting “what if” paper rather than applied astrophysics.

Usually when we talk about the mass of an object we think of it as a basic property of an object. Mass is always positive in quantity, so negative mass must be the same thing but opposite. But in fact there are three types o…

This is great, and captures a pretty common state of affairs for me :)

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This is great, and captures a pretty common state of affairs for me :)

Originally shared by Calvin and Hobbes