Searching...
- Amateur Astronomy
- Astrobiology (134)
- Astrophysics (79)
- Black Holes (38)
- Cosmology (204)
- Dark Matter, Dark Energy (13)
- Galaxies (37)
- History of Astronomy (37)
- Nebulae (19)
- Observational astronomy (107)
- 1. Space Observatories (10)
- 1.1 Chandra X-Ray (63)
- 1.2 Hubble telescope (9)
- 1.3 Kepler Mission (11)
- Solar System (124)
- Small Solar System Bodies (SSSB) (30)
- Space Exploration (90)
- 1. NASA (9)
- 1.1 NASA Human Spaceflight (15)
- 1.1.1 NASA Apollo Program (18)
- 1.1.1.1 The Astronauts (13)
- 1.1.1.2 The Apollo Spacecraft (23)
- 1.1.1.3 The Apollo 7 (14)
- 1.1.1.4 The Apollo 8 (8)
- 1.1.1.5 The Apollo 9 (1)
- 1.1.1.6 The Apollo 10 (1)
- 1.1.1.7 The Apollo 11 (79)
- 1.1.2 NASA Shuttle Program (104)
- 1.1.2.1 STS-127 (20)
- 1.1.2.2 STS-128 (56)
- 1.1.2.3 STS-129 (89)
- 1.1.2.4 STS-130 (10)
- 1.1.2.5 STS-131 (81)
- 1.1.2.6 STS-132 (77)
- 1.1.3 NASA Constellation Program (36)
- 1.2 NASA Uncrewed Missions (17)
- 1.2.a Solar Missions (20)
- 1.2.b Lunar Missions (7)
- 1.2.c Mercury missions (3)
- 1.2.d Venus Missions (4)
- 1.2.e Mars Missions (29)
- 1.2.f Jupiter Missions (10)
- 1.2.g Saturn Missions (17)
- 1.2.h Uranus Missions (2)
- 1.2.i Neptune Missions (4)
- 1.2.j Pluto Missions (3)
- 1.2.k Interplanetary Missions (8)
- 1.2.l Boeing X-37 (12)
- 1.3 Expendable Launch Systems (1)
- 2. International Space Station (7)
- 2.1 ISS Assembly (25)
- Stars (31)
- Supernovae (8)
Topics: Black Holes
Black Holes
A black hole is a concentration of mass in a point of the universe where the gravitational force is so strong that prevents anything to escape, including light. The name comes from its complete absorption of matter and energy, with no reflection, like a perfect blackbody.
