News tagged with small galaxies
Hubble provides new evidence for dark matter around small galaxies
Mar 12, 2009 |
4.4 / 5 (15) |
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Peering into the tumultuous heart of the nearby Perseus galaxy cluster, Hubble discovered a large population of small galaxies that have remained intact while larger galaxies around them are being ripped apart ...
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Heavyweight galaxies puzzle astronomers
Apr 02, 2009 |
4.7 / 5 (10) |
12
(PhysOrg.com) -- Astronomers have discovered large galaxies some two thirds of the way back in time to the big bang. This surprising find casts doubt on theories of how the biggest galaxies form.
Stars forced to relocate near the Southern Fish
Mar 03, 2009 |
4.8 / 5 (4) |
0
About 100 million light-years away, in the constellation of Piscis Austrinus (the Southern Fish), three galaxies are playing a game of gravitational give-and-take that might ultimately lead to their merger ...
How Do Galaxies Grow?
Aug 26, 2008 |
4.4 / 5 (14) |
2
How do galaxies form? The most widely accepted answer to this fundamental question is the model of 'hierarchical formation', a step-wise process in which small galaxies merge to build larger ones. One can ...
Astronomers Discover Most Dark Matter-Dominated Galaxy in Universe
Sep 18, 2008 |
4.3 / 5 (58) |
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(PhysOrg.com) -- A team led by a Yale University astronomer has discovered the least luminous, most dark matter-filled galaxy known to exist.
Compact galaxies in early universe pack a big punch
Apr 29, 2008 |
3.9 / 5 (7) |
8
Imagine receiving an announcement touting the birth of a baby 50 centimetres long and weighing 80 kilograms. After reading this puzzling message, you would immediately think the baby’s weight was a misprint.
Galaxy Zoo Hunters Help Astronomers Discover Rare 'Green Pea' Galaxies
Jul 27, 2009 |
4.8 / 5 (11) |
2
A team of astronomers has discovered a group of rare galaxies called the "Green Peas" with the help of citizen scientists working through an online project called Galaxy Zoo. The finding could lend unique ...
No strain for Andromeda: Galaxy is cosmic cannibal (w/ Video)
Sep 02, 2009 |
4.6 / 5 (9) |
2
(PhysOrg.com) -- A huge galaxy neighbouring our own Milky Way appears to have expanded by "digesting" smaller galaxies nearby, a new study has shown.
Gargantuan galaxy NGC 1132 -- a cosmic fossil?
Feb 05, 2008 |
4.1 / 5 (29) |
2
The elliptical galaxy NGC 1132, seen in this latest image from Hubble, belongs to a category of galaxies called giant ellipticals. NGC 1132, together with the small dwarf galaxies surrounding it, are dubbed ...
Radio telescopes reveal unseen galactic cannibalism
Space & Earth / Space Exploration
Jun 23, 2008 |
4.3 / 5 (20) |
2
[B]Mystery of black hole 'feeding' resolved[/B] Radio-telescope images have revealed previously-unseen galactic cannibalism -- a triggering event that leads to feeding frenzies by gigantic black holes at the cores of ga ...
New stars from old gas surprise astronomers
Feb 18, 2009 |
4.7 / 5 (15) |
9
(PhysOrg.com) -- Evidence of star birth within a cloud of primordial gas has given astronomers a glimpse of a previously unknown mode of galaxy formation. The cloud, known as the Leo Ring, appears to lack ...
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