Magnetically charged particles formed a nicely symmetrical arch at the edge of the sun as they followed the magnetic field lines of an active region on Aug.4-5, 2015. Before long the arch begins to fade, but a fainter and ...
Space Exploration
Aug 13, 2015
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The Solar and Heliospheric Observatory (SOHO) has been watching the Sun for almost 20 years. In that time it has seen solar activity ramp up and die down repeatedly. Its Extreme ultraviolet Imaging Telescope has taken images ...
Space Exploration
Jul 13, 2015
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It almost sounds like a riddle: What tool has transformed basic scientific research and led to new technologies in so many different fields—timekeeping, medical research, communications, remote sensing, astronomy, just ...
Optics & Photonics
Jun 24, 2015
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Is the sun trying to send a message? A pair of giant filaments on the face of the sun have formed what appears to be an enormous arrow pointing to the right. If straightened out, each filament would be about as long as the ...
Space Exploration
May 29, 2015
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Watching the sun is dangerous work for a telescope. Solar instruments in space naturally degrade over time, bombarded by a constant stream of solar particles that can cause a film of material to adhere to the optics. Decades ...
Space Exploration
May 19, 2015
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NASA's Solar Dynamics Observatory, which watches the sun constantly, captured these images of a significant solar flare – as seen in the bright flash on the left – peaking at 6:11 p.m. EDT on May 5, 2015.
Space Exploration
May 7, 2015
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90
October 2014 marks the five-year anniversary for two sensors that the U.S. Naval Research Laboratory (NRL) has been operating aboard the International Space Station (ISS). The Hyperspectral Imager for the Coastal Ocean (HICO) ...
Space Exploration
Feb 6, 2015
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When, in 1833, Constantin Wilhelm Lambert Gloger published his key observation that warm-blooded animals tend to be more heavily pigmented or darker the closer they live to the equator, he probably didn't realize the degree ...
Plants & Animals
Jan 8, 2015
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The sun emitted a significant solar flare on Oct. 19, 2014, peaking at 1:01 a.m. EDT. NASA's Solar Dynamics Observatory, which is always observing the sun, captured this image of the event in extreme ultraviolet wavelength ...
Space Exploration
Oct 21, 2014
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(Phys.org) —You cannot look at the sun without special filters, and the naked eye cannot perceive certain wavelengths of sunlight. Solar physicists must consequently rely on spacecraft that can observe this invisible light ...
Space Exploration
Aug 21, 2014
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