The US Postal Service has released a set of Sun Science stamps that use images from NASA’s Solar Dynamics Observatory to illustrate different solar phenomena like plasma blasts, sunspots, and solar flares.
Printed with a foil treatment that adds a glimmer to the stamps, the images on these stamps come from NASA’s Solar Dynamics Observatory, a spacecraft launched in February 2010 to keep a constant watch on the sun from geosynchronous orbit above Earth. The striking colors in these images do not represent the actual colors of the sun as perceived by human eyesight. Instead, each image is colorized by NASA according to different wavelengths that reveal or highlight specific features of the sun’s activity.
One of the stamps highlights sunspots, two feature images of coronal holes, two show coronal loops, two depict plasma blasts, one is a view of an active sun that emphasizes its magnetic fields, and two show different views of a solar flare.
NASA has more on the science behind the images on the stamps and the whole set of stamps are available for purchase online.
See also A Decade of the Sun.
Tags: astronomy design NASA science stamps Sun USPSfrom kottke.org https://ift.tt/3zR90h4
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