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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
-$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 favourite—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

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.

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4.9 out of 5 stars rating17.5K Total Reviews
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5 out of 5 stars rating
By Kay C.31 October 2020Verified Purchase
Folded Greeting Card, Size: Standard, 12.7 cm x 17.8 cm, Paper: Signature Matte, Envelopes: White
Zazzle Reviewer Program
This card was so lovely and my granddaughter opened the card and hugged it as it had a unicorn on the front and her name And I added a picture inside of us And when her mummy Asked her who it was from she said my nanny and grandad and hugged the card she can’t read yet but knew who it was from. ❤️. Excellent quality of printing colour
5 out of 5 stars rating
By Paul B.23 February 2026Verified Purchase
Folded Greeting Card, Size: Standard, 12.7 cm x 17.8 cm, Paper: Signature Matte, Envelopes: White
Fantastic quality and artwork - very pleased with this card. Will buy again from this creator. Paul - Australia .
5 out of 5 stars rating
By Clive C.1 February 2026Verified Purchase
Folded Greeting Card, Size: Standard, 12.7 cm x 17.8 cm, Paper: Signature Matte, Envelopes: White
I use Zazzle every year to make a card for Chinese New Year. Superb service and great art work. Thank you for being here for me.

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Product ID: 256227820428788938
Posted on 19/01/2024, 10:52 AM
Rating: G 
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