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Dark Matter Mystery Deepens

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Cambridge, MA Like all galaxies, our Milky Way is home to a strange substance called dark matter. Dark matter is invisible, betraying its presence only through its gravitational pull. Wi...

The Orbits of Exoplanets

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An exoplanet is a planet orbiting a star other than our sun. As of this week, the exoplanet encyclopedia website lists 694 confirmed planets around other stars. Most of them have numerous...

Crab Pulsar Dazzles Astronomers with its Gamma-Ray Beams

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Cambridge, MA A thousand years ago, a brilliant beacon of light blazed in the sky, shining brightly enough to be seen even in daytime for almost a month. Native American and Chinese obse...

Stellar Winds

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The Sun, glowing with a surface temperature of about 5500 degrees Celsius, warms the Earth with its salutary light. Meanwhile the Sun's hot outer layer (the corona), with its temperature...

CfA Project Gets First Look through New ALMA Telescope

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Cambridge, MA Humanity's most complex ground-based astronomy observatory, the Atacama Large Millimeter/submillimeter Array (ALMA), has officially opened for astronomers at its 16,500-foo...

An Exoplanet Orbiting a Double Star

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The Kepler satellite, which has now reported the detection of 1781 candidate exoplanets (a planet around a star other than the sun), has also discovered that at least one of them orbits a...

NASA Space Telescope Finds Fewer Asteroids Near Earth

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Cambridge, MA New observations by NASA's Wide-field Infrared Survey Explorer, or WISE, show there are significantly fewer near-Earth asteroids in the mid-size range than previously thoug...
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