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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 5nvklj





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Sun Science Stamps Highlight a Decade of Sun-Watching from Space

Dragon
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Sun Science Stamps Highlight a Decade of Sun-Watching from Space Empty Sun Science Stamps Highlight a Decade of Sun-Watching from Space

Post by Dragon Sun Jun 20, 2021 2:55 am

To start off the summer, the U.S. Postal Service issued a set of stamps highlighting views of the Sun from NASA’s Solar Dynamics Observatory.

Showcasing a range of solar activity seen by the spacecraft, the stamps celebrate a decade of Sun-watching for this workhorse mission.

The Sun Science stamps were issued by the U.S. Postal Service during a ceremony at the Greenbelt Main Post Office in Maryland on June 18.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 2:57 am

Sun Science Stamps Highlight a Decade of Sun-Watching from Space Sun_2
Credits: U.S. Postal Service

The U.S. Postal Service issued a set of stamps highlighting views of the Sun from NASA’s Solar Dynamics Observatory on June 18, 2021.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 2:59 am

Sun Science Stamps Highlight a Decade of Sun-Watching from Space 02_coronal-loops-304-web_0
Credits: NASA/SDO

Coronal Loops

Visible on the lower right of the Sun is a prominence, with its bright arcs traced out by charged particles spiraling along the Sun’s magnetic field lines.

Coronal loops are often found over sunspots and active regions, which are areas of intense and complex magnetic fields on the Sun.

These images were captured on June 18, 2015, in light at 304 Angstroms, an extreme ultraviolet wavelength.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 3:01 am

Sun Science Stamps Highlight a Decade of Sun-Watching from Space 03_solarflare_335-web3_0
Credits: NASA/SDO

The bright flash on the Sun’s upper right is a powerful X-class solar flare. X-class flares are the most powerful type of solar flare, and these bursts of light and energy can disturb the part of Earth’s atmosphere where GPS and radio signals travel.

These images were captured on Aug. 9, 2011, in extreme ultraviolet wavelength 335 Angstroms.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 3:15 am

Sun Science Stamps Highlight a Decade of Sun-Watching from Space 05_plasma_blast_1
Credits: NASA/SDO

Plasma Blast

These images show a burst of material from the Sun, called a coronal mass ejection.

These eruptions of magnetized solar material can create space weather effects on Earth when they collide with our planet’s magnetosphere, or magnetic environment – including aurora, satellite disruptions, and, when extreme, even power outages.

These images are a blend of extreme ultraviolet wavelengths 171 and 304 Angstroms, captured on Aug. 31, 2012.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 3:16 am

Sun Science Stamps Highlight a Decade of Sun-Watching from Space 09_solar-flare-131_0
Credits: NASA/SDO

Solar Flare

These images show another view of the Aug. 9, 2011, X-class solar flare featured in the blue-toned 335 Angstrom images.

These images were captured in light at 131 Angstroms, an extreme ultraviolet wavelength.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 3:18 am

Sun Science Stamps Highlight a Decade of Sun-Watching from Space 07_sunspots_0
Credits: NASA/SDO

Sunspots

This view in visible light – the type of light we can see – shows a cluster of sunspots near the center of the Sun.

Sunspots appear dark because they are relatively cool compared to surrounding material, a consequence of the way their extremely dense magnetic field prevents heated material from rising to the solar surface.

These images were captured Oct. 20-26, 2014, and the frame on the stamp is from Oct. 23.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 3:20 am



Canyon of Fire on the Sun

A magnetic filament of solar material erupted on the sun in late September, breaking the quiet conditions in a spectacular fashion.

The 200,000 mile long filament ripped through the sun's atmosphere, the corona, leaving behind what looks like a canyon of fire.

The glowing canyon traces the channel where magnetic fields held the filament aloft before the explosion.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 3:27 am



See the Solar Wind Blast Away From Sun in NASA Animation


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 3:29 am



On August 31, 2012 a long filament of solar material that had been hovering in the sun's atmosphere, the corona, erupted out into space at 4:36 p.m. EDT.

The coronal mass ejection, or CME, traveled away from the sun at over 900 miles per second.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m
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Post by Dragon Sun Jun 20, 2021 3:35 am



The sun emitted a trio of mid-level solar flares on April 2-3, 2017. NASA’s Solar Dynamics Observatory, which watches the sun constantly, captured images of the three events.


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Sun Science Stamps Highlight a Decade of Sun-Watching from Space 334pu7m

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