NASA Space Posters

Collectible travel items and/or space travel will probably enjoy these stunning posters NASA's Jet Propulsion Laboratory created in honor of a few of the Exoplanets they've discovered with the Kepler space telescope.

An exoplanet, of course, is a planet orbiting a star other than our own.
NASA's description of the destination featured in the image at the top of this post:
 

Experience the Gravity of a Super Earth

Twice as big in volume as the Earth, HD 40307g straddles the line between "Super-Earth" and "mini-Neptune" and scientists aren't sure if it has a rocky surface or one that's buried beneath thick layers of gas and ice. One thing is certain though: at eight time the Earth's mass, its gravitational pull is much, much stronger.

Where the Grass is Always Redder on the Other Side

Kepler-186f is the first Earth-size planet discovered in the potentially 'habitable zone' around another star, where liquid water could exist on the planet's surface. Its star is much cooler and redder than our Sun. 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 color palette that's very different than the greens on Earth. This discovery was made by Kepler, NASA's planet hunting telescope.

All of the posters are available for download in high-res.
courtesy Towleroad.com