News tagged with dwarf galaxies

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How the Milky Way killed off its satellites

(PhysOrg.com) -- Two researchers from Observatoire Astronomique de Strasbourg have revealed for the first time the existence of a new signature of the birth of the first stars in our galaxy, the Milky Way. ...

Oct 19, 2011
4.6 / 5 (5) 0 | with audio podcast

G299.2-2.9, a middle-aged supernova remnant

(PhysOrg.com) -- G299.2-2.9 is an intriguing supernova remnant found about 16,000 light years away in the Milky Way galaxy. Evidence points to G299.2-2.9 being the remains of a Type Ia supernova, where a white ...

Oct 13, 2011
not rated yet 3 | with audio podcast

Galaxy caught blowing bubbles

(PhysOrg.com) -- Hubble's famous images of galaxies typically show elegant spirals or soft-edged ellipses. But these neat forms are only representative of large galaxies. Smaller galaxies like the dwarf irregular ...

Sep 29, 2011
4.9 / 5 (7) 12 | with audio podcast

Gamma-ray emission from Terzan 5

(PhysOrg.com) -- The H.E.S.S. telescope system in Namibia discovered a new source of very-high-energy gamma-rays from the direction of the globular cluster Terzan 5. Being very likely located in the outer ...

Jun 24, 2011
4.8 / 5 (4) 2 | with audio podcast

The rose-red glow of star formation

The vivid red cloud in this new image from ESO's Very Large Telescope is a region of glowing hydrogen surrounding the star cluster NGC 371. This stellar nursery lies in our neighboring galaxy, the Small Magellanic ...

Mar 30, 2011
4.3 / 5 (4) 1 | with audio podcast

Hubble finds that puny stars pack a big punch

(PhysOrg.com) -- A deep survey of more than 200,000 stars in our Milky Way galaxy has unveiled the sometimes petulant behavior of tiny red dwarf stars. These stars, which are smaller than the Sun, can unleash ...

Jan 10, 2011
5 / 5 (6) 2 | with audio podcast

Milky way sidelined in galactic tug of war

(PhysOrg.com) -- The Magellanic Stream is an arc of hydrogen gas spanning more than 100 degrees of the sky as it trails behind the Milky Way's neighbor galaxies, the Large and Small Magellanic Clouds. Our ...

Sep 29, 2010
4.9 / 5 (14) 0 | with audio podcast

Origins of the Milky Way

(PhysOrg.com) -- According to current astronomical models, the Milky Way and other large galaxies formed over billions of years in a process that involved interactions between smaller galaxies, and in particular ...

Mar 19, 2010
4.7 / 5 (12) 10 | with audio podcast

Bully galaxy rules the neighborhood (w/ Video)

(PhysOrg.com) -- In general, galaxies can be thought of as "social" — hanging out in groups and frequently interacting. However, this recent NASA/ESA Hubble Space Telescope image highlights how some galaxies ...

Mar 04, 2010
4 / 5 (6) 0 | with audio podcast