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This Article is From Jan 11, 2015

NASA Posters Depict Alien Worlds

NASA Posters Depict Alien Worlds
Trio of posters drawn up by NASA's Jet Propulsion Laboratory portraying habitable exoplanets.
Washington, United States: NASA has released three exoplanet posters in order to stir the public's curiosity about exoplanets discovered by the Kepler space telescope.

The three posters - created by Joby Harris and David Delgado, visual strategists at NASA's Jet Propulsion Laboratory, California in the US - contain artistic impressions of these alien worlds, reported Space.com.

One of the posters depicts Kepler 186f, a planet sometimes referred to as the 'Earth's cousin', which is larger than the Earth, and circles a star smaller and dimmer than the Sun.

Interestingly, the planet is shown to be covered with red grass.

"If plant life does exist on a planet like Kepler 186f, its photosynthesis could have been influenced by the star's red-wavelength photons, making for a colour palette very different than the greens on the Earth," the poster's planet description reads.

Another poster shows a skydiver flying high above the super-Earth HD 40307g, an exoplanet that is eight times more massive than Earth.

"Prospects for life on this unusual world aren't good as it has a temperature similar to dry ice," the NASA poster said.

The third poster brings us Kepler-16b, an exoplanet which orbits a gravitationally bound pair of stars. That would mean any object on the surface, including a visiting space tourist, would cast two shadows.

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