Pinterest • The world’s catalogue of ideas

#icymi Dark narrow streaks on Martian slopes such as these at Hale Crater are inferred to be formed by seasonal flow of water # on contemporary Mars. The streaks are roughly the length of a football field. The imaging and topographical information in this processed false-color view come from the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. These dark features on the slopes are called "recurring slope lineae" or RSL. Planetary scientists…

NASA astronaut Scott Kelly (@StationCDRKelly) captured this photograph of the green lights of the aurora from the International Space Station on Oct. 7. Sharing with his social media followers Kelly wrote "The daily morning dose of #aurora to help wake you up. #GoodMorning from @ISS! #YearInSpace Image credit: NASA #nasa #space #iss #spacestation #earth by nasa

NASA Astronaut Scott Kelly (@StationCDRKelly) returns from a #YearInSpace tomorrow. Lets #countdown his best pics. #9 Kelly tweeted this image with the message: "Day 282. Soyuz silhouette and #sunset colors of our magnificent #Earth. #GoodNight from @space_station! #YearInSpace". The Soyuz spacecraft is his ride back to Earth. #NASA #Space #SpaceStation #InternationalSpaceStation #Earth by iss

Astronaut Scott Kelly (@StationCDRKelly) captures a striking image of a frozen lake in the Himalayas from the space station 250 miles above. #photography #space #geography #NASA #spacestation #Earth #YearInSpace #earthpix #EarthArt by iss

Traveling the world about 250 miles above the Earth and at 17500 mph @StationCDRKelly has been orbiting our beautiful planet about 16 times a day for the past 313 days. #YearInSpace #PlanetEarth #Earth #NASA #Space #SpaceStation #InternationalSpaceStation by iss