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.
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.
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."
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.
On October 11, 1968, Apollo 7 launched
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.
History changed on Oct. 4, 1957, when the Soviet Union successfully launched Sputnik from the Baikonur Cosmodrome in Kazakhstan. The world's first artificial satellite was about the size of a beach ball, about 23 inches in diameter and weighing less than 190 pounds.
It's planting season on the International Space Station! NASA astronaut Joe Acaba prepared the Veggie facility for three different kinds of lettuce seeds as part of the VEG-03-D investigation. This is the first time seeds from multiple kinds of plants are being grown in the facility all at the same time.
Stunning views like this image of Saturn's night side are only possible thanks to our robotic emissaries like Cassini.
This sequence of color-enhanced images shows how quickly the viewing geometry changes for NASA’s Juno spacecraft as it swoops by Jupiter.
This week in 1973, the second crewed Skylab mission splashed down in the Pacific Ocean following a successful 59-day mission in the orbiting laboratory.
A new iceberg calved from Pine Island Glacier—one of the main outlets where ice from the interior of the West Antarctic Ice Sheet flows into the ocean. The Operational Land Imager (OLI) on the Landsat 8 satellite captured this natural-color image on September 21, 2017, just before the break.
A color composite image of Earth was taken on Sept. 22, 2017, by the MapCam camera on NASA’s OSIRIS-REx spacecraft.
The brightly lit limb of a crescent Enceladus looks ethereal against the blackness of space. This image is a composite of images taken with the Cassini spacecraft narrow-angle camera on March 29, 2017, using filters that allow infrared, green, and ultraviolet light.
This striking image of Jupiter was captured by NASA’s Juno spacecraft as it performed its eighth flyby of the gas giant planet.