This composite image shows the International Space Station, with a crew of three onboard, in silhouette as it transits the Sun at roughly five miles per second, Sunday, Oct. 7, 2018. http://www.nasa.gov/sites/default/files/thumbnails/image/31328177238_0dd426dd63_o.jpg

Cosmonaut Alexey Ovchinin of Roscosmos, left, and astronaut Nick Hague of NASA, right. embrace their families after landing at the Krayniy Airport. http://www.nasa.gov/sites/default/files/thumbnails/image/nhq201810110007.jpg

This view of southern California was taken by the Apollo 7 crew during their 18th revolution of the Earth on Oct. 12, 1968. http://www.nasa.gov/sites/default/files/thumbnails/image/as07-11-2022.jpg

During National Hispanic Heritage Month, we're celebrating the achievements of astronaut Ellen Ochoa and other Hispanic astronauts and professionals at NASA. Floating upside down and reading a checklist may not be how most of us perform the day's work, but it was for Ochoa on Space Shuttle Discovery's STS-96 mission. http://www.nasa.gov/sites/default/files/thumbnails/image/29863224741_73930ea3e4_k.jpg

This artist’s conception of the core of Cygnus A shows the dusty donut-shaped surroundings, called a torus, and jets launching from its center. http://www.nasa.gov/sites/default/files/thumbnails/image/coreofcygnusa_fnl_lynettecook_cf_0.jpg

On Oct. 18, 1989, space shuttle Atlantis deployed NASA's Galileo spacecraft six hours, 30 minutes into the STS-34 mission. Galileo arrived at Jupiter in December, 1995 and spent eight years in orbit around the gas giant, becoming the first spacecraft to orbit an outer planet. http://www.nasa.gov/sites/default/files/thumbnails/image/s34-71-00r.jpg

This glittering ball of stars is the globular cluster NGC 1898, which lies toward the center of the Large Magellanic Cloud. http://www.nasa.gov/sites/default/files/thumbnails/image/potw1840a.jpg

On October 22, 1968, 50 years ago, the Apollo 7 crew splashed down in the Gulf of Mexico. http://www.nasa.gov/sites/default/files/thumbnails/image/s68-52542.jpg

Newborn Stars Blow Bubbles in the Cat's Paw Nebula http://www.nasa.gov/sites/default/files/thumbnails/image/cats-paw-16.jpg

On Sept. 25, 2018, Parker Solar Probe captured a view of Earth as it sped toward the first Venus gravity assist of the mission. Earth is the bright, round object visible in the right side of this image. http://www.nasa.gov/sites/default/files/thumbnails/image/parker-view-of-earth.jpg

The ghost of Cassieopeia's ethereal glow might remind people of apparitions such as those reported by paranormal investigators. http://www.nasa.gov/sites/default/files/thumbnails/image/stsci-h-p1842a-f-4072x4133.png

It’s autumn in the Northern Hemisphere, which means many people living in mountainous areas are awakening to fog-filled valleys. http://www.nasa.gov/sites/default/files/thumbnails/image/blueridge_vir_2018297_lrg.jpg

Senator John Glenn during water survival training for the STS-95 mission at the Neutral Buoyancy Laboratory. On Oct. 29, 1998, space shuttle Discovery launched with Senator Glenn aboard, as he returned to space for the first time since his 1962 flight. http://www.nasa.gov/sites/default/files/thumbnails/image/s98-04614.jpg

After nine years in deep space collecting data that revealed our night sky to be filled with billions of hidden planets – more planets even than stars – NASA’s Kepler space telescope has run out of fuel needed for further science operations. http://www.nasa.gov/sites/default/files/thumbnails/image/kepler_eof_08-01-ws-oil-paint_filter.jpg

Happy birthday, Michael Collins! Test pilot and NASA astronaut Michael Collins served as the pilot for Gemini X and as the command module pilot for the Apollo 11 mission, the first time humans set foot on another celestial body. http://www.nasa.gov/sites/default/files/thumbnails/image/s66-46270_orig.jpg

The Airbus team poses with the European Service Module during preparations for shipment to NASA's Kennedy Space Center. http://www.nasa.gov/sites/default/files/thumbnails/image/p1010202.jpg

The International Space Station photographed by Expedition 56 crew members from a Soyuz spacecraft after undocking. http://www.nasa.gov/sites/default/files/thumbnails/image/iss056e201322.jpg

The Suwannee is known as a “blackwater river” because of its dark-brown waters laden with organic material. http://www.nasa.gov/sites/default/files/thumbnails/image/suwannee_blackriver1.jpg

Earth Enveloped in Airglow http://www.nasa.gov/sites/default/files/thumbnails/image/iss057e035382_lrg.jpg

On Nov. 1, 2018, the USS John P. Murtha recovered the test version of the Orion capsule at sunset in the Pacific Ocean. This is one in a series of tests that will verify and validate procedures and hardware that will be used to recover the Orion spacecraft after it splashes down in the Pacific Ocean following deep space exploration missions. http://www.nasa.gov/sites/default/files/thumbnails/image/43937544230_c83330c8aa_k.jpg