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2. Black hole - Wikipedia

   en.wikipedia.org/wiki/Black_hole

   A black hole with the mass of a car would have a diameter of about 10 −24 m and take a nanosecond to evaporate, during which time it would briefly have a luminosity of more than 200 times that of the Sun. Lower-mass black holes are expected to evaporate even faster; for example, a black hole of mass 1 TeV/c 2 would take less than 10 −88 ...

3. List of nearest known black holes - Wikipedia

   en.wikipedia.org/wiki/List_of_nearest_known...

   As of February 2022, only one isolated black hole has been confirmed, OGLE-2011-BLG-0462, around 5,200 light-years away. [ 2] The nearest known black hole is Gaia BH1, which was discovered in September 2022 by a team led by Kareem El-Badry. Gaia BH1 is 1,560 light-years away from Earth in the direction of the constellation Ophiuchus.

4. List of most massive black holes - Wikipedia

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

   The supermassive black hole at the core of Messier 87, here shown by an image by the Event Horizon Telescope, is among the black holes in this list.. This is an ordered list of the most massive black holes so far discovered (and probable candidates), measured in units of solar masses (M ☉), approximately 2 × 10 30 kilograms.

5. Sagittarius A* - Wikipedia

   en.wikipedia.org/wiki/Sagittarius_A*

   Sagittarius A*, abbreviated as Sgr A* (/ ˈ s æ dʒ ˈ eɪ s t ɑːr / SADGE-AY-star [3]), is the supermassive black hole [4] [5] [6] at the Galactic Center of the Milky Way.Viewed from Earth, it is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, [7] visually close to the Butterfly Cluster (M6) and Lambda Scorpii.

6. Black Hole of Calcutta - Wikipedia

   en.wikipedia.org/wiki/Black_Hole_of_Calcutta

   The Black Hole Memorial, St. John's Church, Calcutta, India. In memoriam of the dead, the British erected a 15-metre (50') high obelisk; it now is in the graveyard of (Anglican) St. John's Church, Calcutta. Holwell had erected a tablet on the site of the 'Black Hole' to commemorate the victims but, at some point (the precise date is uncertain ...

7. Black hole information paradox - Wikipedia

   en.wikipedia.org/wiki/Black_hole_information_paradox

   Black hole information paradox. The first image (silhouette or shadow) of a black hole, taken of the supermassive black hole in M87 with the Event Horizon Telescope, released in April 2019. The black hole information paradox[ 1] is a paradox that appears when the predictions of quantum mechanics and general relativity are combined.

8. Timeline of black hole physics - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_black_hole_physics

   1967 — John Wheeler introduces the term "black hole" in his lecture to the American Association for the Advancement of Science [ 1] 1968 — Brandon Carter uses Hamilton–Jacobi theory to derive first-order equations of motion for a charged particle moving in the external fields of a Kerr–Newman black hole. 1969 — Roger Penrose discusses ...

9. List of black holes - Wikipedia

   en.wikipedia.org/wiki/List_of_black_holes

   CXOU J132527.6-430023 (a candidate stellar mass black hole outside of the Local Group) [ 11] Cygnus X-1. Cygnus X-3. GRO J0422+32 (possibly the smallest black hole yet discovered) [ 12] GRO J1655-40 / V1033 Sco (at one time considered the smallest black hole known) [ 13] GRS 1124-683 / GU Mus. GRS 1915+105 / V1487 Aql.