This photograph of the Lunar Module at Tranquility Base was taken by Neil Armstrong during the Apollo 11 mission, from the rim of Little West Crater on the lunar surface. Armstrong's shadow and the shadow of the camera are visible in the foreground. This is the furthest distance from the lunar module traveled by either astronaut while on the moon. http://www.nasa.gov/sites/default/files/thumbnails/image/as11-40-5961hr.jpg
Tucked away in the small northern constellation of Canes Venatici (The Hunting Dogs) is the galaxy NGC 4242. http://www.nasa.gov/sites/default/files/thumbnails/image/potw1729a.jpg
Expedition 52 Flight Engineer Jack Fischer of NASA shared photos and time-lapse video of a glowing green aurora seen from his vantage point 250 miles up, aboard the International Space Station. This aurora photo was taken on June 26, 2017. http://www.nasa.gov/sites/default/files/thumbnails/image/iss052e007857.jpg
The Soyuz MS-05 spacecraft is seen as it is raised into a vertical position on the launch pad at the Baikonur Cosmodrome, Kazakhstan, Wednesday, July 26, 2017. The Expedition 52 crew is scheduled to launch to the International Space Station aboard the Soyuz on Friday, July 28, at 11:41 a.m. EDT (9:41 p.m. Baikonur time). http://www.nasa.gov/sites/default/files/thumbnails/image/36132963076_4dd2651525_o.jpg
This false-color view from NASA's Cassini spacecraft gazes toward the rings beyond Saturn's sunlit horizon. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21621-1041.jpg
The Soyuz MS-05 rocket is launched with Expedition 52 flight engineer Sergei Ryazanskiy of Roscosmos, flight engineer Randy Bresnik of NASA, and flight engineer Paolo Nespoli of ESA (European Space Agency), Friday, July 28, 2017 at the Baikonur Cosmodrome in Kazakhstan. http://www.nasa.gov/sites/default/files/thumbnails/image/nhq201707280011.jpg
On July 26, 2017, a member of the Expedition 52 crew aboard the International Space Station took this photograph of one of the 16 sunrises they experience every day, as the orbiting laboratory travels around Earth. One of the solar panels that provides power to the station is seen in the upper left. http://www.nasa.gov/sites/default/files/thumbnails/image/iss052e019970.jpg
This mini-panorama combines two photographs taken by Apollo 15 lunar module pilot Jim Irwin, from the Apollo Lunar Surface Experiments Package (ALSEP) site, at the end of the second Apollo 15 moonwalk on August 1, 1971. Apollo 15 was the fourth crewed mission to land on the Moon. http://www.nasa.gov/sites/default/files/thumbnails/image/a15pan11845-7.jpg
NASA astronaut Randy Bresnik looks through the hatch of the International Space Station's Bigelow Expandable Aerospace Module (BEAM) on July 31, 2017. The BEAM is an experimental expandable module just over halfway into its planned two-year demonstration on the space station. http://www.nasa.gov/sites/default/files/thumbnails/image/iss052e023354.jpg
On July 5, 2017, NASA’s Solar Dynamics Observatory watched an active region — an area of intense and complex magnetic fields — rotate into view on the Sun. This image shows a blended view of the sunspot in visible and extreme ultraviolet light, revealing bright coils arcing over the active region — particles spiraling along magnetic field lines. http://www.nasa.gov/sites/default/files/thumbnails/image/sunspotthumb1.jpg
The thin sliver of Saturn's moon Prometheus lurks near ghostly structures in Saturn's narrow F ring in this view from NASA's Cassini spacecraft. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21340-1041.jpg
An astronaut aboard the International Space Station took this photograph of solar evaporation ponds outside the city of Moab, Utah. There are 23 colorful ponds spread across 400 acres. They are part of a large operation to mine potassium chloride—more commonly referred to as muriate of potash (MOP)—from ore buried underground. http://www.nasa.gov/sites/default/files/thumbnails/image/iss052e008757_lrg.jpg
Dwarf galaxy NGC 5949 sits at a distance of around 44 million light-years from us, placing it within the Milky Way’s cosmic neighborhood. http://www.nasa.gov/sites/default/files/thumbnails/image/potw1732a.jpg
NASA's Cassini spacecraft looks toward the night side of Saturn's moon Titan in a view that highlights the extended, hazy nature of the moon's atmosphere. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21625.jpg
The two-stage Falcon 9 launch vehicle lifts off Launch Complex 39A at NASA's Kenney Space Center carrying the Dragon resupply spacecraft to the International Space Station. http://www.nasa.gov/sites/default/files/thumbnails/image/35762625713_ec6cc0f232_o.jpg
This striking Jovian vista was created by citizen scientists Gerald Eichstädt and Seán Doran using data from the JunoCam imager on NASA’s Juno spacecraft. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21778.png
As the Sun rises at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, a United Launch Alliance Atlas V rocket vents liquid oxygen propellant vapors during fueling for the lift off of NASA's Tracking and Data Relay Satellite, TDRS-M. http://www.nasa.gov/sites/default/files/thumbnails/image/35842085403_f4d65f9429_o.jpg
As the Sun rises at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida, a United Launch Alliance Atlas V rocket vents liquid oxygen propellant vapors during fueling for the lift off of NASA's Tracking and Data Relay Satellite, TDRS-M. http://www.nasa.gov/sites/default/files/thumbnails/image/35842085403_f4d65f9429_o.jpg
This composite image shows the progression of a partial solar eclipse over Ross Lake, in Northern Cascades National Park, Washington on Monday, Aug. 21, 2017. http://www.nasa.gov/sites/default/files/thumbnails/image/nhq201708210306.jpg
Cassini gazes across the icy rings of Saturn toward the icy moon Tethys, whose night side is illuminated by Saturnshine, or sunlight reflected by the planet. http://www.nasa.gov/sites/default/files/thumbnails/image/pia21342-1041.jpg