An image taken on July 19, 2013, by the wide-angle camera on NASA's Cassini spacecraft captured Saturn, its rings and planet Earth, which is the tiny dot in the lower right.
NASA/JPL-Caltech/Space Science Institute
Astronaut Peggy Whitson became NASA's astronaut with the most time in orbit Monday. She is seen here earlier this year, along with fellow astronauts, in the Quest airlock of the International Space Station.
Bill Nye the Science Guy arrives to lead scientists and supporters down Constitution Avenue during the March for Science on Saturday in Washington, D.C. The event is being described as a call to support and safeguard the scientific community.
Jessica Kourkounis/Getty Images
This long-exposure photograph taken on April 23, 2015, on Earth Day, shows Lyrids meteors shower passing near the Milky Way in the clear night sky of Thanlyin, Myanmar.
Ye Aung Thu/AFP/Getty Images
The United Launch Alliance Atlas V rocket, with the Orbital ATK Cygnus pressurized cargo module, stands ready for launch on the pad at Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida.
United Launch Alliance