These USPS Sun Science One Sheet Forever Stamps - Booklet of 20 First Class Forever Stamps highlight amazing views of the Sun from a spacecraft that has been monitoring the Sun 24-hours a day for more than a decade. SDO views the Sun in 10 different wavelengths of light covering the visible, ultraviolet, and extreme ultraviolet bands of the light spectrum.

 

SDO views the sun in 13 different ways, using two different onboard instruments. SDO has recorded hundreds of millions of images from the Sun, showing us different views of the visible surface all the way out to the extended part of the Sun’s atmosphere called the corona. The part of the solar atmosphere that can be seen from the ground during a total solar eclipse.

 

Features:

• Real Postage Stamps: These are real postage stamps that can mail letters, envelopes, and others, They can cover the international rates the first time, USPS serves any country with a one-ounce letter. One stamp is one ounce.
• Forever Stamps: These postage stamps are valid USPS forever postage stamps that can be used at any time, you can send mail no more than 1 ounce by USPS.
• Saving Your Time and Money: No need to waste your time and money on the way to the post office for stamps! Our postage stamps are very convenient and also at a nice price!
• Easy Use: With self-adhesive, and convenient to use. Not only great for postcards, letters, mailing envelopes, or collecting but also suitable for collectibles, birthdays, weddings, parties, celebrations, and so on.