When light interacts with a mirror which is moving towards it at a speed close to the speed of light, its wavelength is shifted into the extreme ultraviolet region of the spectrum. This effect was first predicted by Albert ...
Optics & Photonics
Apr 25, 2019
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5
NASA's Solar Dynamics Observatory views our sun in 10 different wavelengths because each wavelength reveals different solar features. This Sept. 21, 2018, view of the sun uses two selected images taken at virtually the same ...
Space Exploration
Sep 26, 2018
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15
On Sept. 9, 2018, NASA's Solar Dynamics Observatory, SDO, saw two lunar transits as the Moon passed in front of the Sun. A transit happens when a celestial body passes between a larger body and an observer. This first lunar ...
Space Exploration
Sep 10, 2018
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11
NASA and its partners launched a rocket-borne camera to the edge of space at 2:54 p.m. EST May 29, 2018, on its third flight to study the sun. The clarity of images returned is unprecedented and their analysis will provide ...
Space Exploration
Jun 05, 2018
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16
An active region rotated into view and sputtered with numerous small flares and towering magnetic field lines that stretched out many times the diameter of Earth (May 23-25, 2018).
Space Exploration
May 30, 2018
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12
Despite their appearance solar tornadoes are not rotating after all, according to a European team of scientists. A new analysis of these gigantic structures, each one several times the size of the Earth, indicates that they ...
Space Exploration
Apr 05, 2018
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184
Leiden physicists found a surprising interaction between electrons and a resist layer. The resist appears to charge and discharge due to incoming electrons. Publication in Physical Review Letters.
General Physics
Feb 07, 2018
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21
NASA's Solar Dynamics Observatory came across an oddity that the spacecraft has rarely observed before: a dark filament encircling an active region (Oct. 29-31, 2017). Solar filaments are clouds of charged particles that ...
Space Exploration
Nov 09, 2017
3
167
This sequence of images shows the Sun from its surface to its upper atmosphere all taken at about the same time on Oct. 27, 2017. The first shows the surface of the Sun in filtered white light; the other seven images were ...
Space Exploration
Nov 02, 2017
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3
September 2017 saw a spate of solar activity, with the Sun emitting 27 M-class and four X-class flares and releasing several powerful coronal mass ejections, or CMEs, between Sept. 6-10. Solar flares are powerful bursts of ...
Space Exploration
Oct 27, 2017
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