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13 minutes ago, DogOnPorch said:

Celestia attempt to display Sagittarius A*...it's one of those OMG, it's full of stars things up close. Doubt one could get a good night's sleep near the core...mind the X-Rays.

I read something new about Cygnus X-1 just the other day:

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One of the biggest and first known black holes in the Milky Way galaxy is more massive than astronomers thought, a team of scientists announced on Thursday. The finding throws a wrench into long-held models of how massive stars evolve on the way to the ultimate doom.

Famous Black Hole Gets a Massive Update

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Titan II's "Whoop"  

It was also lucky that at the time of Uranus discovery, Neptunes orbit had the two planets close together. If Neptune had been on the other side of the sun its gravity would not have affected Uranus.

A Celestia aside.... If you get the large star database and what-not...you can drift along Star Trek-like at about 1 ly per second and watch the stars streak by. Even at a blinding speed like tha

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15 minutes ago, OftenWrong said:

I read something new about Cygnus X-1 just the other day:

Famous Black Hole Gets a Massive Update

 

That's interesting. The twenty Solar mass limit for collapsed stars ---> black hole seemed like one of those rules that was bound to be broken. Good looking black holes in Celestia...

Cygnux X-1 in Celestia

http://celestiamotherlode.net/catalog/fictional.html#1800

fictional_Black_Hole_Cygnus_X1_1__Cham.thumb.jpg.4fd5a4d334aa911be7ee2a14ee9cc746.jpg

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A Celestia aside....

If you get the large star database and what-not...you can drift along Star Trek-like at about 1 ly per second and watch the stars streak by. Even at a blinding speed like that, if you turn and lock onto M31 or something similar, you get a sobering reality check as to HOW far 2,000,000 light years away is...two million seconds in this case. Over 500 hours...

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