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Happy Birthday Grandson - Star Cluster Birthday Card

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Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
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About Folded Greeting Cards

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Size: Standard, 5" x 7"

Thank you, hello, or I love you, custom greeting cards are thoughtful gifts that are always the perfect way to express yourself.

  • Dimensions: 5" x 7" (portrait); 7" x 5" (landscape)
  • Full colour CMYK print process
  • Double sided printing for no additional cost

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

Happy Birthday Grandson - Star Cluster Birthday Card

Happy Birthday Grandson - Star Cluster Birthday Card

Galaxies, Stars and Nebulae series: The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends one degree on the sky in the direction of the Scorpius constellation. Part of the nebula is ionised by the youngest (bluest) heavy stars in Pismis 24. The intense ultraviolet radiation from the blazing stars heats the gas surrounding the cluster and creates a bubble in NGC 6357. The presence of these surrounding gas clouds makes probing into the region even harder. One of the top candidates for the title of "Milky Way stellar heavyweight champion" was, until now, Pismis 24-1, a bright young star that lies in the core of the small open star cluster Pismis 24 (the bright stars in the Hubble image) about 8,000 light-years away from Earth. Pismis 24-1 was thought to have an incredibly large mass of 200 to 300 solar masses. New NASA/ESA Hubble measurements of the star, have, however, resolved Pismis 24-1 into two separate stars, and, in doing so, have "halved" its mass to around 100 solar masses. It makes a great card for a grandson who wants to grow up to be an astronaut! Image credit: NASA/ESA Hubble

Customer Reviews

4.9 out of 5 stars rating17.3K Total Reviews
16269 total 5-star reviews714 total 4-star reviews118 total 3-star reviews59 total 2-star reviews110 total 1-star reviews
17,270 Reviews
Reviews for similar products
5 out of 5 stars rating
By Debra J.April 17, 2024Verified Purchase
Folded Greeting Card, Size: Standard, 5" x 7", Paper: Signature Matte, Envelopes: White
Really pleased with the card quality. The perfect theme to personalize a birthday celebration. Birthday greeting combined with a Christmas wish for my nieces Christmas Birthday. Perfect! These colours really pop on this Matte finish. The cute funny monkey expressions add humour to a birthday card surprise.
5 out of 5 stars rating
By AnonymousOctober 1, 2025Verified Purchase
Folded Greeting Card, Size: Big, 8.5" x 11", Paper: Signature Matte, Envelopes: White
I absolutely love this!! Thank you so much for creating a very special birthday card for my mom for her very special day!
5 out of 5 stars rating
By Lisa B.August 21, 2023Verified Purchase
Folded Greeting Card, Size: Standard, 5" x 7", Paper: Signature Matte, Envelopes: White
Zazzle Reviewer Program
We ordered this for my mother in law’s 90th birthday. We used pictures from throughout the years. She loved the card and surely will bring tears and smiles whenever she looks at it. Printing was very clear

Tags

Folded Greeting Cards
happy birthday grandsonhappy returns grandsonbirthday wishesgrandsonastronautspacemangalaxiesouter spacestar clusterastronomy photography
All Products
happy birthday grandsonhappy returns grandsonbirthday wishesgrandsonastronautspacemangalaxiesouter spacestar clusterastronomy photography

Other Info

Product ID: 137398806902109715
Designed on 2013-01-07, 6:19 AM
Rating: G