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2. Black hole - Wikipedia

   en.wikipedia.org/wiki/Black_hole

   A black hole is a region of spacetime where gravity is so strong that nothing, not even light and other electromagnetic waves, is capable of possessing enough energy to escape it. [2] Einstein 's theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

3. Astronomy Picture of the Day - Wikipedia

   en.wikipedia.org/wiki/Astronomy_Picture_of_the_Day

   Active. Astronomy Picture of the Day ( APOD) is a website provided by NASA and Michigan Technological University (MTU). It reads: "Each day a different image or photograph of our universe is featured, along with a brief explanation written by a professional astronomer ." [1] The photograph does not necessarily correspond to a celestial event on ...

4. List of black holes - Wikipedia

   en.wikipedia.org/wiki/List_of_black_holes

   1ES 2344+514. Ton 618 (this quasar has possibly the biggest black hole ever found, estimated at 66 billion solar masses) [1] 3C 371. 4C +37.11 (this radio galaxy is believed to have binary supermassive black holes) [2] AP Lib. S5 0014+81 (said to be a compact hyperluminous quasar, estimated at 40 billion solar masses) [3] APM 08279+5255 ...

5. List of software for astronomy research and education

   en.wikipedia.org/wiki/List_of_Software_for...

   List of software for astronomy research and education. Listed here are software packages useful for conducting scientific research in astronomy, and for seeing, exploring, and learning about the data used in astronomy. or Manip. FITS Images.

6. Celestia - Wikipedia

   en.wikipedia.org/wiki/Celestia

   Celestia is a real-time 3D astronomy software program that was created in 2001 by Chris Laurel. The program allows users to virtually travel through the universe and explore celestial objects that have been catalogued. Celestia also doubles as a planetarium, but the user is not restricted to the Earth's surface, like in other planetarium ...

7. Stellar black hole - Wikipedia

   en.wikipedia.org/wiki/Stellar_black_hole

   A stellar black hole (or stellar-mass black hole) is a black hole formed by the gravitational collapse of a star. [1] They have masses ranging from about 5 to several tens of solar masses. [2] They are the remnants of supernova explosions, which may be observed as a type of gamma ray burst. These black holes are also referred to as collapsars .

8. Black hole cosmology - Wikipedia

   en.wikipedia.org/wiki/Black_hole_cosmology

   Physical cosmology. A black hole cosmology (also called Schwarzschild cosmology or black hole cosmological model) is a cosmological model in which the observable universe is the interior of a black hole. Such models were originally proposed by theoretical physicist Raj Kumar Pathria, [1] and concurrently by mathematician I. J. Good. [2]

9. List of most massive black holes - Wikipedia

   en.wikipedia.org/wiki/List_of_most_massive_black...

   These methods are specified in their notes. List of most massive black holes. Host or black hole name. Solar mass ( Sun = 1 × 10 0 ) Notes. (Theoretical limit) 2.7×1011. This is the maximum mass of a black hole that models predict, at least for luminous accreting SMBHs.