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Brown Dwarfs As Seen By An Interstellar Traveller. Postcard

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Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
-CA$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 personalisation tool.

  • Dimensions: 14.22 cm L x 10.79 cm H; qualified USPS postcard size
  • High quality, full-colour, 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

Brown Dwarfs As Seen By An Interstellar Traveller. Postcard

Brown Dwarfs As Seen By An Interstellar Traveller. Postcard

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 rating16K Total Reviews
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5 out of 5 stars rating
By Tina J.March 5, 2019Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Zazzle Reviewer Program
nicely done very clear. print turned out well done
5 out of 5 stars rating
By Denise W.May 1, 2024Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
I'm in love! Just look how sweet these two are! 🥰☘🍀. Great graphics n print! Glossy adds flair! Thanks! ☘🍀
5 out of 5 stars rating
By Denise W.May 1, 2024Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Such a sweet vintage look post card!!! Wonderful!!! Thanks Zazzle n the creator!

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dwarf starssizecomparisonspacebrown dwarfssubstellar objectsastronomical objectspurpleredcircle

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Product ID: 256106295064276441
Designed on 2024-01-19, 10:52 AM
Rating: G 
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