News tagged with dwarf galaxies

Hubble provides new evidence for dark matter around small galaxies

Space & Earth / Astronomy

Mar 12, 2009 | 4.4 / 5 (15) | 38

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 ...

New stars from old gas surprise astronomers

Space & Earth / Astronomy

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 ...

Astronomers Discover Most Dark Matter-Dominated Galaxy in Universe

Space & Earth / Astronomy

Sep 18, 2008 | 4.3 / 5 (58) | 19

(PhysOrg.com) -- A team led by a Yale University astronomer has discovered the least luminous, most dark matter-filled galaxy known to exist.

Scientists discover minimum mass for galaxies

Space & Earth / Astronomy

Aug 27, 2008 | 4.4 / 5 (27) | 8

(PhysOrg.com) -- By analyzing light from small, faint galaxies that orbit the Milky Way, UC Irvine scientists believe they have discovered the minimum mass for galaxies in the universe – 10 million times the ...

Starbursts in Dwarf Galaxies are a Global Affair

Space & Earth / Astronomy

Apr 30, 2009 | 5 / 5 (4) | 1

(PhysOrg.com) -- Bursts of star making in a galaxy have been compared to a Fourth of July fireworks display: They occur at a fast and furious pace, lighting up a region for a short time before winking out.

Study shows clumps and streams of dark matter in inner regions of the Milky Way

Space & Earth / Astronomy

Aug 06, 2008 | 4.3 / 5 (36) | 6

(PhysOrg.com) -- Using one of the most powerful supercomputers in the world to simulate the halo of dark matter that envelopes our galaxy, researchers found dense clumps and streams of the mysterious stuff ...

Globular clusters tell tale of star formation in nearby galaxy metropolis

Space & Earth / Astronomy

Aug 05, 2008 | 4.3 / 5 (13) | 5

Globular star clusters, dense bunches of hundreds of thousands of stars, contain some of the oldest surviving stars in the Universe. A new international study of globular clusters outside our Milky Way Galaxy ...