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Astronomers have recorded the most powerful radiation blast from deep space yet detected. The source of the blast is assumed to be the catastrophic implosion of a star, to create a black hole.

2009-02-20

 star black hole implosion gamma ray
Tiny black holes near the galaxy's centre can fling stars out of the Milky Way at break-neck speeds. Previously, only the supermassive black hole there was thought to be able to produce these "hypervelocity" stars. ... predicted in 1988 that the monster black hole at our galaxy's centre should disrupt pairs of stars, capturing one and launching the other out of the galaxy altogether. Since 2004, astronomers have found...

2006-09-13

 Milky Way star black hole
Professor Hawking's own work was responsible for generating the black hole information paradox. In 1976, he calculated that once a black hole forms, it radiates energy and starts losing mass. This "Hawking radiation" gives no information about matter inside the black hole and once the black hole evaporates, all information is lost. But this runs contrary to the laws of quantum physics, which dictate that this information can...

2004-07-15

 universe black hole
Astronomers have spied a star-sized black hole much further away than any such object previously known. It has a mass 20 times that of our Sun and is sited six million light-years away in the galaxy NGC 300.

2010-01-27

 black hole astronomy
A supermassive black hole may have been observed in the process of being hurled from its parent galaxy at high speed.

2010-05-12

 black hole astronomy galaxy collision
The colossal black holes at the centre of galaxies probably formed shortly after the Big Bang.

2010-08-25

 universe Big Bang black hole galaxy physics
US astronomers are confident an object studied for 30 years in the M100 galaxy is a black hole. If so, it would be the "youngest, nearby" such object to Earth. It is still a long way off in human terms - more than 470 million, million, million km. But given the size of the cosmos, that is effectively just like our back yard, says the Nasa team. The object, bright in X-rays, is in the same place on the sky that a giant stellar...

1979

 black hole galaxy
In a rare interview, Professor Stephen Hawking explains to artist and writer Matt Collings his theory on the complex behaviour of black holes, and whether he thinks equations can be considered beautiful.

2010-12-14

 Stephen Hawking beauty mathematics physics black hole equation Occam's razor discovery sex science
The article considers the question of whether universal complexity development, and thus universal progress, has some long-term directionality and predictability to it.

2011-11-03

 black hole extraterrestrial life nanotechnology time space universe philosophy intelligence
The mystery surrounding the source of the highest-energy particles known in the Universe has grown deeper. The particles, known as cosmic rays, can show up with energies a million times higher than the biggest particle accelerators on Earth can produce. Astrophysicists believed that only two sources could make them: supermassive black holes in active galaxies, or so-called gamma ray bursts. A study in Nature has now all but ruled out gamma...

2012-04-19

 gamma ray black hole particle energy universe galaxy cosmic ray neutrino