This view, acquired on Nov. 7, 2016, by the Operational Land Imager (OLI) on Landsat 8, shows a portion of Canada’s Mackenzie River Delta and the town of Inuvik, home to more than 3,000 people. A frozen highway — 194 kilometers (120 miles) long — runs between the remote outposts of Inuvik and Tuktoyaktuk along the river’s East Channel. via NASA http://ift.tt/2n6yXWH

Expedition 50 Commander Shane Kimbrough of NASA shared this nighttime image of Dublin on March 17, 2017, writing, “Happy #StPatricksDay Spectacular #Dublin, Ireland captured by @thom_astro from @Space_Station. Enjoy the #StPatricksFest Parade down there!” via NASA http://ift.tt/2mXdeAb

Annie Easley at NASA Glenn Research Center. In 1955, Easley began her career at NASA, then the National Advisory Committee for Aeronautics (NACA), as a human computer performing complex mathematical calculations. via NASA http://ift.tt/2mwYwwB

Annie Easley at NASA Glenn Research Center. In 1955, Easley began her career at NASA, then the National Advisory Committee for Aeronautics (NACA), as a human computer performing complex mathematical calculations. via NASA http://ift.tt/2mwNirW

The technicians who are inspecting the telescope and its expansive golden mirrors look like ghostly wraiths in this image as they conduct a “lights out inspection” in the Spacecraft Systems Development and Integration Facility (SSDIF) at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. via NASA http://ift.tt/2n006uB

The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Aqua satellite captured this natural-color image of cloud streets over the Barents Sea and Mezhdusharsky Island on March 7, 2017. Such formations occur frequently in the region in late winter. via NASA http://ift.tt/2mJ59z3

Mimas’ gigantic crater Herschel lies near the moon’s limb in this Cassini view. via NASA http://ift.tt/2mDR6el

The super star cluster Westerlund 1, only 15,000 light-years away in our Milky Way neighborhood, hosts one of the largest stars ever discovered. via NASA http://ift.tt/2mr5mVH

Engineers Successfully Test the Parachutes for NASA’s Orion Spacecraft at the U.S. Army Yuma Proving Ground via NASA http://ift.tt/2lHA9jX