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Brown Dwarfs As Seen By An Interstellar Traveller. Card

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Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
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+$1.05
-$0.30

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Size: Standard, 12.7 cm x 17.8 cm

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

  • Dimensions: 12.7 cm x 17.78 cm (portrait); 17.78 cm x 12.7 cm (landscape)
  • Full color 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

Brown Dwarfs As Seen By An Interstellar Traveller. Card

Brown Dwarfs As Seen By An Interstellar Traveller. Card

Artist's concept illustrating what brown dwarfs of different types might look like to a hypothetical interstellar traveller who has flown a spaceship to each one. On the left is an L dwarf, in the middle is a T dwarf, and on the right is a Y dwarf. The objects are progressively cooler in atmospheric temperatures as you move from left to right. The L dwarf is seen as a dim red orb to the eye. The T dwarf is even fainter and appears with a darker reddish, or magenta, hue. The Y dwarf is dimmer still. Because astronomers have not yet detected Y dwarfs at the visible wavelengths we see with our eyes, the choice of a purple hue is done mainly for artistic reasons. The Y dwarf is also illustrated as reflecting a faint amount of visible starlight from interstellar space. In this rendering, the traveller's spaceship is the same distance from each object. This illustrates an unusual property of brown dwarfs, that they all have the same dimensions, roughly the size of the planet Jupiter, regardless of their mass. This mass disparity can be as large as fifteen times or more when comparing an L to a Y dwarf, despite the fact that both objects have the same radius.

Customer Reviews

4.9 out of 5 stars rating17.5K Total Reviews
16516 total 5-star reviews726 total 4-star reviews122 total 3-star reviews58 total 2-star reviews119 total 1-star reviews
17,541 Reviews
Reviews for similar products
5 out of 5 stars rating
By Cat S.21 November 2024Verified Purchase
Folded Greeting Card, Size: Standard, 12.7 cm x 17.8 cm, Paper: Signature Matte, Envelopes: White
Beautiful card and good quality.
5 out of 5 stars rating
By DARREN W.6 June 2022Verified Purchase
Folded Greeting Card, Size: Standard, 12.7 cm x 17.8 cm, Paper: Signature Matte, Envelopes: White
Zazzle Reviewer Program
The ude of a completely personal and very up-to-date concept using the Avatar this card will be the perfect way for me to send my love you & miss you greetings whilst I am away. Perfect print and very clear
5 out of 5 stars rating
By Lisa U.21 November 2021Verified Purchase
Folded Greeting Card, Size: Standard, 12.7 cm x 17.8 cm, Paper: Signature Matte, Envelopes: White
Zazzle Reviewer Program
A beautiful card. Highest quality materials and print. Misunderstood the explanation of the gold accent. I took it as the design would be metallic in its appearance. Still a lovely card and I am extremely happy with it overall. Perfect, only that I expected the gold to be metallic.

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Folded Greeting Cards
dwarf starssizecomparisonspacebrown dwarfssubstellar objectsastronomical objectspurpleredcircle
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dwarf starssizecomparisonspacebrown dwarfssubstellar objectsastronomical objectspurpleredcircle

Other Info

Product ID: 256227820428788938
Added on 19/1/24, 10:52 am
Rating: G 
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