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发帖数: 298 | 1 Researchers begin to trace the ancestry of massive galaxies.
by Elesa Janke
By studying quasars and their host galaxies with the Hubble Space Telescope
(HST), a team of astronomers has begun to trace the “family tree” of giant
elliptical galaxies. The group's findings reveal that 10 billion years ago,
when the universe was one third of its present age, these galaxies were
already forming, converting large amounts of gas into luminous families of
stars.
Among the most luminous objects ever found, |
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