The Juno team celebrates after receiving confirmation from the spacecraft that it had successfully completed the engine burn and entered orbit of Jupiter, Monday, July 4, 2016 in mission control of the Space Flight Operations Facility at the Jet Propulsion Laboratory. The Juno mission launched August 5, 2011 and will orbit the planet for 20 months. http://www.nasa.gov/sites/default/files/thumbnails/image/27997163342_4ea08a0abc_o.jpg

The Soyuz MS-01 spacecraft is raised vertical after it was rolled out by train to the launch pad at the Baikonur Cosmodrome, Kazakhstan, Monday, July 4, 2016. NASA astronaut Kate Rubins, cosmonaut Anatoly Ivanishin of Roscosmos, and astronaut Takuya Onishi of JAXA will launch to the International Space Station the evening of July 6 Eastern time. http://www.nasa.gov/sites/default/files/thumbnails/image/28080162595_65d5012e24_o.jpg

The Soyuz MS-01 spacecraft launches from the Baikonur Cosmodrome with Expedition 48. http://www.nasa.gov/sites/default/files/thumbnails/image/nhq201607070004.jpg.jpeg

This image of dark dunes on Mars was taken on Feb. 6, 2016, by the HiRISE camera on NASA's Mars Reconnaissance Orbiter. These dunes are influenced by local topography. The shape and orientation of dunes can usually tell us about wind direction, but in this image, the dune-forms are very complex, so it’s difficult to know the wind direction. http://www.nasa.gov/sites/default/files/thumbnails/image/esp_044675_2580.jpg

Around local midnight time on April 8, 2015, astronauts aboard the International Space Station took this photograph of Paris, often referred to as the “City of Light.” The pattern of the street grid dominates at night, providing a completely different set of visual features from those visible during the day. http://www.nasa.gov/sites/default/files/thumbnails/image/iss043e093480_lrg.jpg

Crew members on the International Space Station re-installed the first 3D printer in orbit, during the week of June 27, 2016, to continue research on the developing technology and how it can be used in space. NASA astronaut Jeff Williams installed the printer in the Microgravity Science Glovebox to begin another round of sample builds. http://www.nasa.gov/sites/default/files/thumbnails/image/iss048e015246.jpg

In this view looking up from the floor of the Vehicle Assembly Building at NASA’s Kennedy Space Center, four levels of new work platforms are now installed on the north and south sides of High Bay 3. The G-level work platforms are the fourth of 10 levels that will surround and provide access to the Space Launch System rocket and Orion spacecraft. http://www.nasa.gov/sites/default/files/thumbnails/image/27940134825_a000e40469_o.jpg

Expedition 48 Commander Jeff Williams of NASA captured photographs of western Cuba and the Gulf of Batabanó as the International Space Station flew overhead. Williams shared this composite image on social media, writing, "Wow! Look at how the navy blue contrasts with the aqua, Gulf of Batabano Cuba." http://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/jsc2016e055921.jpg

This image, taken by the NASA/ESA Hubble Space Telescope’s Advanced Camera for Surveys (ACS), shows a starburst galaxy named MCG+07-33-027. This galaxy lies some 300 million light-years away from us, and is currently experiencing an extraordinarily high rate of star formation — a starburst. http://www.nasa.gov/sites/default/files/thumbnails/image/hubble_friday_07152016.jpg

Saturn's main rings, along with its and moons, are much brighter than most stars. http://www.nasa.gov/sites/default/files/thumbnails/image/pia20489.jpg

Sea ice across the Arctic Ocean is shrinking to below-average levels this summer. NASA’s Operation IceBridge, an airborne survey of polar ice, just completed its first flights studying the aquamarine pools of melt water on the ice surface that may be accelerating the overall sea ice retreat. http://www.nasa.gov/sites/default/files/thumbnails/image/largemeltpond14july16.jpg

On July 20, 1976, at 8:12 a.m. EDT, NASA received the signal that the Viking Lander 1 successfully reached the Martian surface. This major milestone represented the first time the United States successfully landed a vehicle on the surface of Mars, collecting an overwhelming amount of data that would soon be used in future NASA missions. http://www.nasa.gov/sites/default/files/thumbnails/image/pia00567a.jpg

This view of a massive cluster of galaxies unveils a very cluttered-looking universe filled with galaxies near and far. Some are distorted like a funhouse mirror through a "space warp" phenomenon first predicted by Einstein a century ago.
https://www.nasa.gov/sites/default/files/thumbnails/image/p1628a1nowords.jpg

The NASA Extreme Environment Mission Operations (NEEMO) 21 mission began on July 21, 2016, as an international crew of aquanauts splashed down to the undersea Aquarius Reef Base, 62 feet below the surface of the Atlantic Ocean. The NEEMO 21 crew will perform research both inside and outside the habitat during a 16-day simulated space mission. http://www.nasa.gov/sites/default/files/thumbnails/image/cn7b4dnwgaar5ph.jpg

This NASA/ESA Hubble Space Telescope image reveals the vibrant core of the galaxy NGC 3125. Discovered by John Herschel in 1835, NGC 3125 is a great example of a starburst galaxy — a galaxy in which unusually high numbers of new stars are forming, springing to life within intensely hot clouds of gas. http://www.nasa.gov/sites/default/files/thumbnails/image/hubble_monday_07252016.jpg

NASA’s Scalable Convergent Electric Propulsion Technology and Operations Research (SCEPTOR) project has reached a critical milestone, where the electric propulsion integration and conversion of the Tecnam P2006T aircraft into the X-57 will commence. http://www.nasa.gov/sites/default/files/thumbnails/image/afrc2016-0212-109.jpg

An unusual celestial object called CX330 was first detected as a source of X-ray light in 2009. It has been launching “jets” of material into the gas and dust around it. http://www.nasa.gov/sites/default/files/thumbnails/image/pia20700.jpg

The blue dots in this field of galaxies, known as the COSMOS field, show galaxies that contain supermassive black holes emitting high-energy X-rays. http://www.nasa.gov/sites/default/files/thumbnails/image/pia20865.jpg

On July 21, 2016, Expedition 48 Commander Jeff Williams of NASA shared this photograph of sunglint illuminating the waters of the Chesapeake Bay, writing, "Morning passing over the Chesapeake Bay heading across the Atlantic." http://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/iss048-e-28526.jpg

Acadia National Park is one of the most visited parks in America, drawing more than 2.5 million visitors per year to the craggy, jagged coast of Maine. The park is celebrating its 100th anniversary in 2016. On September 6, 2015, the Operational Land Imager (OLI) on the Landsat 8 satellite acquired these images of the park and its surroundings. http://www.nasa.gov/sites/default/files/thumbnails/image/acadia_oli_2015249_lrg.jpg