---

A black hole is a region of spacetime exhibiting gravitational acceleration so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of the region from which no escape is possible is called the event horizon. Although the event horizon has an enormous effect on the fate and circumstances of an object crossing it, no locally detectable features appear to be observed. In many ways, a black hole acts like an ideal black body, as it reflects no light. Moreover, quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe.

---

---

Interesting:

---

Astronomy Zodiac Constellations Leo  Solar System With Skull Designs  Nasa Staff  Space Suit 2013  How Old Is Jennifer Mir  Mcc Community College Basketball  Goddard Rocket Space  Mars Rover Landing Mohawk  Charles Bolden Nasa Muslim  Symbol Of Planets And Arch  How Many Moons Orbit Venus  How Many Planets Are In Our Solar System 

---

Related queries:

---

Black Hole Picture, Black Hole Definition, Black Hole Sun, Black Hole Image, Black Hole Chan, Black Hole Movie, Black Hole Sun Lyrics, Black Hole Of Calcutta, 

---