News tagged with massive galaxy

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Measuring galaxy black hole masses

(PhysOrg.com) -- Black holes, one of the most amazing and bizarre predictions of Einstein's theory of gravity, are irresistible sinks for matter and energy. They are so dense that not even light can escape from their gravitational ...

dateMay 27, 2011 in Astronomy
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Large galaxies stopped growing 7 billion years ago

(PhysOrg.com) -- Galaxies are thought to develop by the gravitational attraction between and merger of smaller 'sub-galaxies', a process that standard cosmological ideas suggest should be ongoing. But new data from a team ...

dateApr 20, 2011 in Astronomy
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The murmur of a monster

The Andromeda galaxy is the nearest large galaxy to our Milky Way. Like the Milky Way, it has a spiral-arm structure with a massive black hole at its nucleus. Unlike the Milky Way, however, its black hole is remarkable in ...

dateFeb 28, 2011 in Astronomy
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A multi-wavelength view of radio galaxy Hercules A

(Phys.org)—Spectacular jets powered by the gravitational energy of a super massive black hole in the core of the elliptical galaxy Hercules A illustrate the combined imaging power of two of astronomy's cutting-edge tools, ...

dateNov 29, 2012 in Astronomy
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Forming stars in the early universe

The first stars appeared about one hundred million years after the big bang, and ever since then stars and star formation processes have lit up the cosmos. When the universe was about three billion years old, star formation ...

dateNov 21, 2016 in Astronomy
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