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View Full Version : Milky Way is Consuming Many Galaxies



Fraser
2006-May-09, 06:26 PM
SUMMARY: The Milky Way is continuing to consume entire galaxies, and the evidence is right there in the night sky. After analyzing data from the Sloan Digital Sky Survey, astronomers have found many streams of stars - all that remains from these gobbled up galaxies. As a satellite galaxy merges with the Milky Way, it's slowly torn apart as it sinks into the galactic halo. Streams of stars are unraveled like a ball of yarn, and these continue to orbit the Milky Way, distinct from the orbital movements of the rest of the stars in our galaxy.

View full article (http://www.universetoday.com/am/publish/ras_milkyway_mergers.html)
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_DRAGONLORD_
2006-May-09, 07:14 PM
So they're saying that the Milky Way and other large galaxies are consuming
smaller galaxies and gaining more mass?

antoniseb
2006-May-09, 07:31 PM
The Milky Way and other large galaxies are consuming smaller galaxies and gaining more mass?

Perhaps. I think it is possible that many of the smaller galaxies that the Milky way is consuming may be relics from a previous interaction with M31. In that case the Milky way is not really getting bigger, it is recovering some of its old mass.