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Mercury planet  #Mercury is the planet closest to the Sun, but not the hottest. Find out which planet is: http://astronomyisawesome.com/solar-systems/cool-facts-about-mercury/ #astronomy

Planet Mercury - The smallest and closest to the Sun with almost no atmosphere. (Composite image taken by MESSENGER)

Mercury is the closest planet to our Sun, but oddly enough, not the hottest. Since Mercury has no atmosphere, more of the Sun's heat radiates away from it whereas Venus, even though it's further away from the sun, has a thick greenhouse atmosphere trapping and retaining the Sun's heat and making it hotter.

Planet - Mercury is the closest planet to our Sun, but oddly enough, not the hottest. Since Mercury has no atmosphere, more of the Sun's heat radiates away from it.

Jupiter and Io, taken by New Horizon spacecraft, en route for Pluto

Jupiter and Io, taken by New Horizon spacecraft, en route for Pluto . Jupiter, my favorite planet!

A NASA spacecraft that's nearing dwarf planet Ceres has returned new images showing the mysterious lights that have scientists scratching their heads.

NASA releases new photos showing strange lights on dwarf planet Ceres

Sulfur, sulfur dioxide and graphitized carbon observed on asteroid for first time

The bright, circular deposit in the upper centre of this enhanced colour image…

Most volcanic activity on Mercury stopped about billion years ago - Fullact Trending Stories With The Laugh Mixture

Venus    Image: NASA

Taurus Key Planet: Venus The second closest planet to the earth, Venus, is the planet of love and desire.

The Lunar X Love Astronomy Picture of the Day follow @CutePhoneCases #Astronomy #PictureoftheDay http://ift.tt/1UUoVSO

The Lunar X Love Astronomy Picture of the Day follow @CutePhoneCases #Astronomy #PictureoftheDay http://ift.tt/1UUoVSO

The color of Neptune is a bright azure blue. During its flyby in 1989, NASA’s Voyager 2 revealed the bright blue color, different from the pale blue color of Uranus. So why does Neptune have this color?  The answer to Neptune’s color comes from its cloud tops. The upper atmosphere of Neptune is made up of 80% hydrogen,19% helium with a trace 1% amount of methane and other ices, like ammonia and water. Methane absorbs light at 600 nm, which is the red end of the spectrum of visible light.

Making the case for an ice giants mission

Neptune Full Disk View (NASA Voyager Neptune Encounter Images) - Featured: the planet Neptune

Titan as seen by Cassini's VIMS. This composite image shows an infrared view of Saturn's moon Titan from NASA's Cassini spacecraft, acquired during the mission's ''T-114'' flyby on Nov. 13, 2015.

Peering Through Titan's Haze

Titan as seen by Cassini's VIMS. This composite image shows an infrared view of Saturn's moon Titan from NASA's Cassini spacecraft, acquired during the mission's flyby on Nov.

Jupiter

Jupiter is the largest planet in the solar system. It has 67 moons which orbit around it. The spot in the lower left is the Great Red Spot, a giant high-pressure storm that has existed since at least the century.

Callisto - one of Jupiter's moons and one of my very favorite things in space. It's so beautiful :3

Callisto - Fourth moon of Jupiter after Io - Europa - Ganymede. Formed of rock and ices Third largest moon in our solar system after Titan (Saturn) and Ganymede (Jupiter) respectively. Jupiter's Io being fourth and our Luna fifth.

The Planet Mercury - Facts and Photos. Mercury - the closest of all planets to the Sun. At first glance Mercury resembles nothing more closely than our own Moon - a barren rocky world strewn with craters.  #Mercury is the planet closest to the Sun, but not the hottest. Find out which planet is: http://astronomyisawesome.com/solar-systems/cool-facts-about-mercury/ #astronomy

Astronomy; The Planet Mercury - Facts and Photos