Why Do We Explore? Simply Put, It Is Part Of Who We Are, And It Is Something We Have Done Throughout

A photo of S Rings, a ring near Saturn. Took by Cassini with COISS on March 04, 2013 at 08:56:39. Detail page on OPUS database.

Saturn, Cincinnati Observatory. _Popular astronomy_ 1860.

First time shooting the Perseid meteor shower. Definitely doing this again and I’ll try to get the Geminids in December as well. Finally edited and put these pictures together. This one turned out pretty good I think, I also have some more on my flickr account with better quality. There’s about 40 meteors here, captured from both nights and combined into one. Was up on Mt. Lemmon for both nights and started shooting from midnight to about 4am.

Let’s learn something about rocket science

White holes

White holes are hypothetically the complete opposite of a black hole; nothing can enter it. They appear in the theory of Eternal Black holes. Einstein field equations would position white holes in the past which is also the opposite of black hole regions placed in the future. The white hole shares the same properties as matter. It has a gravitational pull but objects traveling towards it would never reach the event horizon. The white hole event horizon in the past becomes a black hole event horizon in the future thus any object heading to the event horizon for the white hole will eventually end up on the event horizon on the black hole. Stephen Hawking made the argument that because black holes can be in a time-reversal-invariant state, this would imply that black holes and white holes are the same object. The Hawking radiation from the black hole is identified being emitted from the white hole.

There is much much more to white holes than this and many different theories. I like the idea of a white hole being the output for the black hole forming an Einstein-Rosen bridge. However, there are currently no known processes for how white holes are formed, they are not like a black hole which is formed from the collapse of a very large object.

A great paper to help you understand one of the current white hole theories is found on thins like http://arxiv.org/vc/arxiv/papers/1105/1105.2776v1.pdf

Infared Saturn This (false color) infrared image was taken with Hubble’s Near Infrared Camera and Multi-Object Spectrometer (NICMOS).

Credit: NASA/Hubble

May 14, 2009 – A close-up view of astronaut John Grunsfeld performing spacewalk to do some maintenance on the Hubble Space Telescope, photographed by Andrew Feustel, who can be seen in Grunsfeld’s visor. 

(NASA)

New video! Dark nebulae in a nutshell!

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The largest image of the Andromeda Galaxy ever created. (69536 x 22230 pixels)  Source; NASA/ESA Hubble Space Telescope