News tagged with mutual gravitational attraction

Lives and deaths of sibling stars

This beautiful star cluster, NGC 3293, is found 8000 light-years from Earth in the constellation of Carina (The Keel). This cluster was first spotted by the French astronomer Nicolas-Louis de Lacaille in ...

dateJul 23, 2014 in Astronomy
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Northern Rockies skies for September

The early September night sky is dominated by the summer triangle (Vega, Deneb and Altair) directly overhead. The constellation Scorpius lies on the southwest horizon with its brilliant red star, Antares.

dateAug 30, 2012 in Space Exploration
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A super cluster of galaxies

(Phys.org)—Most galaxies lie in clusters, groupings of several to many thousands of galaxies. Our Milky Way galaxy itself is a member of the "Local Group," a band of about fifty galaxies whose other large ...

dateAug 28, 2012 in Astronomy
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When dark energy turned on (Update)

(PhysOrg.com) -- Some six billion light years distant, almost halfway from now back to the big bang, the universe was undergoing an elemental change. Held back until then by the mutual gravitational attraction ...

dateMar 30, 2012 in Astronomy
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Astronomy team discovers nearby dwarf galaxy

(PhysOrg.com) -- A team led by UCLA research astronomer Michael Rich has used a unique telescope to discover a previously unknown companion to the nearby galaxy NGC 4449, which is some 12.5 million light years ...

dateFeb 08, 2012 in Astronomy
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