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A kugelblitz (German: [ˈkuːɡl̩ˌblɪt͡s] ⓘ) is a theoretical astrophysical object predicted by general relativity. It is a concentration of heat , light or radiation so intense that its energy forms an event horizon and becomes self-trapped.
Kugelblitz (German for "ball lightning") may refer to: Kugelblitz (armoured fighting vehicle) , a German self-propelled anti-aircraft gun used in World War II Kugelblitz (astrophysics) , a concentration of light so intense that it forms an event horizon and becomes self-trapped
In an early speculation, Stephen Hawking conjectured that a black hole would not form with a mass below about 10 −8 kg (roughly the Planck mass). [2] To make a black hole, one must concentrate mass or energy sufficiently that the escape velocity from the region in which it is concentrated exceeds the speed of light.
In astrophysics, an event horizon is a boundary beyond which events cannot affect an outside observer. Wolfgang Rindler coined the term in the 1950s. [1]In 1784, John Michell proposed that gravity can be strong enough in the vicinity of massive compact objects that even light cannot escape. [2]
A stellar core is the extremely hot, dense region at the center of a star. For an ordinary main sequence star, the core region is the volume where the temperature and pressure conditions allow for energy production through thermonuclear fusion of hydrogen into helium.
Everyone that loves to go to the beach in the summer knows that hopping around on hot sand to reach the shore is a part of it. But how hot is too hot?
Police in Hartford, Connecticut, are searching for the suspect who opened fire at a 12-year-old who threw a snowball at a car. Officers responded to a report of a shooting around 7:15 p.m ...
This is a list of the hottest exoplanets so far discovered, specifically those with temperatures greater than 2,500 K (2,230 °C; 4,040 °F) for exoplanets irradiated by a nearby star and greater than 2,000 K (1,730 °C; 3,140 °F) for self-luminous exoplanets.