Low gravity alien, artwork

Low gravity alien, artwork

S920/0163 Rights Managed

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This image is part of the feature Walking On Alien Worlds

Credit: CHRISTIAN DARKIN/SCIENCE PHOTO LIBRARY

Caption: Low gravity alien. Artwork of an alien life form adapted for life on a planet with low surface gravity. It closely resembles Earth-based plants and trees but has evolved to the low gravity and thin atmosphere by growing much taller than on Earth. A rocky planet that is smaller than the Earth would have lower surface gravity. Its thin atmosphere means it would also be much cooler. In order to sustain life, a smaller Earth-like planet must not have less than one-half of the surface gravity of Earth. Any less and the atmosphere would escape into space. This is the process that many believed occurred on the planet Mars.

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Keywords: alien, alien life form, alien plant, aliens, artwork, astrobiology, astronomy, biological, biology, botanical, botany, computer artwork, cosmology, earth like, earth-like, exobiology, illustration, low atmosphere, low gravity, nature, plant, plant life, science, tall, thin atmosphere, tree, xenoscience

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