News tagged with solar cycle

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Star Tau Boo's baffling magnetic flips

(Phys.org) —The first observations of the complete magnetic cycle of a star other than the Sun are proving a puzzle to astronomers. Tau Boötis, known as Tau Boo (τ Boo), is a yellowish star that is a little brighter than ...

dateJul 04, 2013 in Astronomy
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Noctilucent clouds get an early start

Every summer, something strange and wonderful happens high above the north pole. Ice crystals begin to cling to the smoky remains of meteors, forming electric-blue clouds with tendrils that ripple hypnotically against the ...

dateJun 10, 2013 in Earth Sciences
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Three years of the Sun in three minutes

Since the Solar Dynamics Observatory opened its multi-spectral eyes in space about three years ago, we've posted numerous videos and images from the mission, showing incredible views of our dynamic Sun. Scott Wiessinger from ...

dateApr 23, 2013 in Space Exploration
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Quiet Interlude in Solar Max

(Phys.org) —Something unexpected is happening on the Sun. 2013 was supposed to be the year of "solar maximum," the peak of the 11-year sunspot cycle. Yet 2013 has arrived and solar activity is relatively low. Sunspot numbers ...

dateMar 08, 2013 in Space Exploration
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Solar cycle update: Twin peaks?

Something unexpected is happening on the sun. 2013 is supposed to be the year of Solar Max, the peak of the 11-year sunspot cycle. Yet 2013 has arrived and solar activity is relatively low. Sunspot numbers are well below ...

dateMar 04, 2013 in Space Exploration
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Solar variability and terrestrial climate

(Phys.org)—In the galactic scheme of things, the Sun is a remarkably constant star. While some stars exhibit dramatic pulsations, wildly yo-yoing in size and brightness, and sometimes even exploding, the luminosity of ...

dateJan 11, 2013 in Space Exploration
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