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Stars with the chemical clock on hold

An international team of astrophysicists, led by Cristina Chiappini from the Leibniz Institute for Astrophysics Potsdam, has discovered a group of red giant stars for which the 'chemical clock' does not work: according to ...

dateApr 10, 2015 in Astronomy
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Measuring galaxy evolution with globular clusters

Globular clusters are gravitationally bound ensembles of stars, as many as a million stars in some cases, grouped in roughly spherical clusters with diameters as small as only tens of light-years. Globular clusters are typically ...

dateMar 23, 2015 in Astronomy
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Hubble explores the mysteries of UGC 8201

The galaxy UGC 8201, captured here by the NASA/ESA Hubble Space Telescope, is a dwarf irregular galaxy, so called because of its small size and chaotic structure. It lies just under 15 million light-years away from us in ...

dateMar 19, 2015 in Astronomy
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Big toe's big bone holds evolutionary key

Our skeletons hold tell-tale signs that show that human bipedalism – walking upright and on two feet – are unique to humans especially when compared to our closest living relatives, apes. Exactly when these signs first ...

dateMar 13, 2015 in Evolution
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