News tagged with massive galaxy

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Old star, new trick

The Big Bang produced lots of hydrogen and helium and a smidgen of lithium. All heavier elements found on the periodic table have been produced by stars over the last 13.7 billion years. Astronomers analyze starlight to determine ...

dateApr 30, 2012 in Astronomy
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A new paradigm for active galactic nuclei

(Phys.org) -- Seyfert galaxies are similar to normal galaxies like our own Milky Way except in one critical respect: their nuclei are fantastically bright, in extreme instances as luminous as 100 billion suns. Astronomers ...

dateApr 24, 2012 in Astronomy
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Ultra-luminous x-ray sources

(PhysOrg.com) -- An ultra-luminous X-ray source (ULX) emits more radiation in the X-rays than do a million suns at all wavelengths. ULXs are rare: Most galaxies, including our own Milky Way, have none, and galaxies that do ...

dateMar 19, 2012 in Astronomy
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Stars made from galactic recycling material

(PhysOrg.com) -- Ordinary galaxies such as our own Milky Way contain a plethora of gas and dust. Nevertheless, there is not nearly enough matter to explain how galaxies produce new stars at the observed rates for long. As ...

dateMar 15, 2012 in Astronomy
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Hubble views grand star-forming region

(PhysOrg.com) -- This massive, young stellar grouping, called R136, is only a few million years old and resides in the 30 Doradus Nebula, a turbulent star-birth region in the Large Magellanic Cloud, a satellite galaxy of ...

dateMar 09, 2012 in Astronomy
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