Known as the ‘Mother of Hubble,’ Nancy Grace Roman is shown here at the Yerkes Observatory, University of Chicago in 1948, where she was studying for her doctorate in astronomy. via NASA http://ift.tt/2FDE2zJ

The intertank is the second piece of structural hardware for the massive Space Launch System core stage, built at NASA’s Michoud Assembly Facility in New Orleans and delivered to Marshall Space Flight Center for testing. via NASA http://ift.tt/2D7lKBx

This image was originally meant to track the movement of sand dunes near the North Pole of Mars, but what’s on the ground in between the dunes is just as interesting! via NASA http://ift.tt/2tjh9wx

Astronauts Joan Higginbotham (foreground) and Suni Williams refer to a procedures checklist as they work the controls of the Canadarm2, in this 2006 image. via NASA http://ift.tt/2FrgsWT

This image captures the swirling cloud formations around the south pole of Jupiter, looking up toward the equatorial region. via NASA http://ift.tt/2GX7Ynp

A ULA Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station carrying the NOAA Geostationary Operational Environmental Satellite, or GOES-S. Launch was at 5:02 p.m. EST, March 1, 2018. GOES-S is the second satellite in a series of next-generation weather satellites. via NASA http://ift.tt/2CRP2nH

The Geostationary Operational Environmental Satellite (GOES-S) satellite sits on the launch pad at Space Launch Complex 41, Cape Canaveral Air Force Station, backdropped by the setting Sun. GOES-S is slated to lift off on March 1 at 5:02 p.m. EST. via NASA http://ift.tt/2t6l6ob

The Soyuz MS-06 spacecraft is seen as it lands with Expedition 54 crew members Joe Acaba and Mark Vande Hei of NASA and cosmonaut Alexander Misurkin near the town of Zhezkazgan, Kazakhstan on Wednesday, Feb. 28, 2018 (February 27 Eastern time). via NASA http://ift.tt/2EYTRl2

The six-member Expedition 54 crew poses for a lighthearted crew portrait inside the Japanese Kibo laboratory module on Feb. 18, 2018. Three of the crew members are packed up and prepared to return to Earth today, Tuesday, Feb. 27. via NASA http://ift.tt/2HPTerZ

Though sea ice has been significantly below normal extent and thickness across much of the Arctic, the ice in the Labrador Sea has been relatively close to normal. via NASA http://ift.tt/2HLW018