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Gravitational Waves Found Inside Spectrum Postcard

4.9 out of 5 stars rating
15686 Total Reviews |
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Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
-$0.30
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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
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About This Design

Gravitational Waves Found Inside Spectrum Postcard

Gravitational Waves Found Inside Spectrum Postcard

Gravitational waves were recently discovered, confirming Einstein's prediction of gravitational waves from over 100 years ago. Einstein noted that the fabric of space-time can become curved by anything massive in the Universe, such as cataclysmic events such as black holes merging or stars exploding, and that events would cause a curvature of space-time and propagate as waves. Let your wry scientific side shine with this postcard featuring "The Gravitational Wave Spectrum" along with the geek humor saying "Gravitational Waves Found Inside". No need to be a physicist or astrophysicist to enjoy!
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Customer Reviews

4.9 out of 5 stars rating15.7K Total Reviews
14308 total 5-star reviews999 total 4-star reviews197 total 3-star reviews68 total 2-star reviews114 total 1-star reviews
15,686 Reviews
Reviews for similar products
5 out of 5 stars rating
By Ray A.September 30, 2025 • Verified 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, 2021 • Verified 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, 2022 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
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
astronomygalactic humorphysicsastrophysicsgravitational wavesspectrumfound insidegeek humorscience humorwords and unwords
All Products
astronomygalactic humorphysicsastrophysicsgravitational wavesspectrumfound insidegeek humorscience humorwords and unwords

Other Info

Product ID: 239517439648647388
Created on: 2/11/2016, 4:36 PM
Rating: G 
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