1. This photo depicts the celebration of the 50th anniversary of Apollo 8's launch into history
On December 21, 1968, Apollo 8 was launched from Pad A, Launch Complex 39, Kennedy Space Center at 7:51 am ES.
2. These two astronauts, Anne McClain, and Serena Auñón-Chancellor work aboard the station
Captured here are NASA astronauts Anne McClain, who can be seen in the background, and Serena Auñón-Chancellor, pictured inside the U.S. Destiny laboratory module aboard the International Space Station.
3. Pictured here, Spirit of Apollo, in commemoration of the 50th Anniversary of Apollo 8 at the Washington National Cathedral
This stunning photo depicts the Washington National Cathedral, lit up with space imagery prior to the Smithsonian National Air and Space Museum's Spirit of Apollo event commemorating the 50th anniversary of Apollo 8 on Tuesday, December 11, 2018, in Washington, DC.
4. Researching supersonic flight
This image of the horizon was taken as seen from the cockpit of NASA Armstrong Flight Research Center's F/A-18 research aircraft.
5. Newest crew launches for the International Space Station Crew Launches for the International Space Station
The Soyuz MS-11 spacecraft was launched from the Baikonur Cosmodrome in Kazakhstan to bring a new crew to begin their six and a half month mission on the International Space Station.
6. Hubble captures and explores the Coma Cluster's more than 1,000 galaxies
This Hubble Space Telescope mosaic is of a portion of the immense Coma cluster of over 1,000 galaxies, located 300 million light-years from Earth.
7. Captured here, the dunes in Mars' Wirtz Crater
It is said that these dunes are likely active.
8. Exploding stars make key ingredient found in glass
In a new study that observed NASA's Spitzer Space Telescope, reported, for the first time, that silica, one of the most common minerals found on Earth, is formed when massive stars explode.
9. 20 years ago, construction began on the International Space Station
The Zarya Functional Cargo Block was launched from the Baikonur Cosmodrome to serve as a temporary control module for the nascent International Space Station. The photo depicts the station today, fully complete.
10. SS John Young Cargo Craft Docks to Space Station
Astronaut Serena Auñón-Chancellor said: "Captured Cygnus today with @Astro_Alex…Proud to have The SS John Young on-board!" as the International Space Station crew brought aboard the latest Northrop Grumman Cygnus cargo craft, loaded with almost three tons of food, fuel, and supplies.
11. Antares as seen from Washington D.C. Tidal Basin
Seen above the Thomas Jefferson Memorial in Washington, DC, on November 17, 2018, is the Northrop Grumman Antares rocket, with Cygnus resupply spacecraft onboard.
12. Finding an elusive star behind a supernova
An artist's concept of a blue supergiant star, that once existed inside a cluster of young stars in the spiral galaxy NGC 3938, located 65 million light-years away.