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What is the heliocentric model of the universe?

The Scientific Revolution, which took in the 16th and 17th centuries, was a time of unprecedented learning and discovery. During this period, the foundations of modern science were laid, thanks to breakthroughs in the fields ...

dateJan 05, 2016 in Astronomy
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Rotational clock for stars needs recalibration

New work from a team of astronomers led by Carnegie's Jennifer van Saders indicates that one recently developed method for determining a star's age needs to be recalibrated for stars that are older than our Sun. This is due ...

dateJan 04, 2016 in Astronomy
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How many moons does Mercury have? (Update)

Virtually every planet in the solar system has moons. Earth has the moon, Mars has Phobos and Deimos, and Jupiter and Saturn have 67 and 62 officially named moons, respectively. Heck, even the recently-demoted dwarf planet ...

dateJan 01, 2016 in Space Exploration
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What is the biggest star in the Universe?

Look up at the night sky and it is filled with stars. But only a microscopic fraction are visible to the naked eye. In fact, there are estimated to be 100 billion stars in 10,000 billion galaxies in the visible universe. ...

dateDec 18, 2015 in Astronomy
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How does the sun produce energy?

There is a reason life that Earth is the only place in the solar system where life is known to be able to live and thrive. Granted, scientists believe that there may be microbial or even aquatic life forms living beneath ...

dateDec 14, 2015 in Space Exploration
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A look back at NASA solar missions

Twenty years ago, the Solar and Heliospheric Observatory, a cooperative effort between NASA and the European Space Agency, launched into space and revolutionized our study of the sun and a scientific discipline called heliophysics ...

dateDec 02, 2015 in Space Exploration
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SDO sees a dark filament circle

A dark, almost circular filament broke away from the sun in a gauzy, feathery swirl, on Nov. 15, 2015, in this video from NASA's Solar Dynamics Observatory. This filament eruption was followed by a second filament breaking ...

dateNov 26, 2015 in Space Exploration
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