This Hubble image shows what happens when two galaxies become one. The twisted cosmic knot seen here is NGC 2623 — or Arp 243 — and is located about 250 million light-years away in the constellation of Cancer (The Crab).
Jupiter’s moon Amalthea casts a shadow on the gas giant planet in this image captured by NASA’s Juno spacecraft.
NASA astronaut Joe Acaba photographed Puerto Rico from the cupola of the International Space Station on Oct. 12, 2017. Sharing the image with his followers on social media, he wrote, “Finally a chance to see the beautiful island of Puerto Rico from @Space_Station. Continued thoughts throughout the recovery process.”
The Apollo 7 Saturn IB launched from the Kennedy Space Center’s Launch Complex 34 at 11:03 a.m. October 11, 1968. This image show the tracking antenna on the left and a pad service structure on the right.
Hidden beneath Chamber A at the Johnson Space Center is an area engineers used to test critical contamination control technology that has helped keep our James Webb Space Telescope clean during cryogenic testing.
This illustration shows the hot, dense, expanding cloud of debris stripped from neutron stars just before they collided.
NASA astronaut Mark Vande Hei exits the International Space Station on Oct. 10, 2017, for a spacewalk in this photograph taken by fellow spacewalker Randy Bresnik. Bresnik wrote, “A glorious sunrise greeted @Astro_Sabot and I at the start of our 2nd #spacewalk. His visor reflection shows the airlock hatch we came out.”
Dawn brings the sight of Dream Chaser, Sierra Nevada Corporation’s reusable spaceplane, as it sits on the runway at NASA’s Armstrong Flight Research Center.
This image from NASA’s Mars Reconnaisance Orbiter (MRO) shows one possible place where sand grains are being produced on Mars today.
Astronaut Randy Bresnik conducts a spacewalk on October 5.
Members of the National Space Council are seen during the council’s first meeting on Oct. 5 at the Smithsonian National Air and Space Museum’s Steven F. Udvar-Hazy Center. The council, chaired by Vice President Mike Pence heard testimony from representatives from civil space, commercial space, and national security space industry representatives.