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Cassiopeia, Milky Ways Youngest Supernova Postcard

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Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
-$0.19

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Size: Standard Postcard

Create your own vacation-worthy postcard! Any view you’ve seen, any monument you’ve fallen in love with, can all be added to your postcard with our personalization tool.

  • Dimensions: 5.6" L x 4.25" H; qualified USPS postcard size
  • High quality, full-color, full-bleed printing on both sides

Paper Type: Signature Matte

Our Signature Matte paper is a customer favorite—smooth to the touch with a soft eggshell texture that elevates any design. Its sturdy 18 pt weight and natural feel make it the ideal choice for timeless, sophisticated events.

  • Exclusively made for Zazzle
  • Made and Printed in the USA
  • FSC® Certified—sourced from responsibly managed forests that protect both people and planet

About This Design

Cassiopeia, Milky Ways Youngest Supernova Postcard

Cassiopeia, Milky Ways Youngest Supernova Postcard

Galaxies, Stars and Nebulae series: This really, really deep Chandra image shows Cassiopeia A, the youngest supernova remnant in the Milky Way. New analysis shows that this supernova remnant acts like a relativistic pinball machine by accelerating electrons to enormous energies. The blue, wispy arcs in the image show where the acceleration is taking place in an expanding shock wave generated by the explosion. The red and green regions show material from the destroyed star that has been heated to millions of degrees by the explosion. Astronomers have used this data to make a map, for the first time, of the acceleration of electrons in a supernova remnant. Their analysis shows that the electrons are being accelerated to almost the maximum theoretical limit in some parts of Cas A. Protons and ions, which make up the bulk of cosmic rays, are expected to be accelerated in a similar way to the electrons. Therefore, this discovery provides strong evidence that supernova remnants are key sites for energizing cosmic rays. Image code: cassasn, Image credit: NASA/CXC/MIT/UMass Amherst/M.D. Stage et al.

Customer Reviews

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5 out of 5 stars rating
By Ray A.September 30, 2025Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Very pleased with my order. All my prints were manufactured to a very high standard to my exact specifications and edited additions.
5 out of 5 stars rating
By Paul I.February 4, 2021Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Creator Review
I had never seen these classic science fiction images and most of my friends have not seen them either. They are like little treasures! Amazing quality and fun to send people!
5 out of 5 stars rating
By Jennifer W.November 28, 2022Verified Purchase
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Zazzle Reviewer Program
I joined Postcrossing a few months ago and wanted postcards to represent my state well. I found them on Zazzle. I purchased numerous cards and was impressed with all of them. Excellent! The colors are beautiful. The cards have the exact look I wanted. I couldn't be happier.

Tags

Postcards
outer space picturesupernova explosionsupernovae remnantmilky way youngest supernovaneutron stardeep space astronomycassiopeiacosmic rayhrbstslr cassasnspace beauty
All Products
outer space picturesupernova explosionsupernovae remnantmilky way youngest supernovaneutron stardeep space astronomycassiopeiacosmic rayhrbstslr cassasnspace beauty

Other Info

Product ID: 239742650190048070
Created on: 10/26/2013, 6:57 AM
Rating: G