News tagged with stars

Image: Star Mapper visualisation

In 1989, ESA launched the first space mission dedicated to astrometry – the science of charting the sky. The satellite was named Hipparcos, echoing the name of ancient Greek astronomer, Hipparchus, who compiled the oldest ...

dateSep 13, 2016 in Astronomy
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The Big Dipper in the year 92,000

You go out and look at the stars year after year and never see any of them get up and walk away from their constellations. Take a time machine back to the days of Plato and Socrates and only careful viewing would reveal that ...

dateSep 13, 2016 in Space Exploration
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A riddle for our time

One of the most remarkable successes of astrophysics in the last century was its discovery that the age of the universe as measured by its oldest stars was about the same as the age estimated in an entirely different way, ...

dateSep 12, 2016 in Astronomy
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Young magnetar likely the slowest pulsar ever detected

Using NASA's Chandra X-ray Observatory and other X-ray observatories, astronomers have found evidence for what is likely one of the most extreme pulsars, or rotating neutron stars, ever detected. The source exhibits properties ...

dateSep 08, 2016 in Astronomy
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Hubble views a cosmic oyster and pearl in NGC 1501

The world is your oyster, as the expression goes – and the NASA/ESA Hubble Space Telescope, with its advanced instruments and favourable location in orbit above Earth's atmosphere, has far more of the Universe to explore ...

dateSep 07, 2016 in Astronomy
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Detailed age map shows how Milky Way came together

Using colors to identify the approximate ages of more than 130,000 stars in the Milky Way's halo, Notre Dame astronomers have produced the clearest picture yet of how the galaxy formed more than 13.5 billion years ago.

dateSep 06, 2016 in Astronomy
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