This image of Ceres is part of a sequence taken by NASA's Dawn spacecraft. Original from NASA. Digitally enhanced by… Free Image from public domain license 
The ICESCAPE mission, or "Impacts of Climate on Ecosystems and Chemistry of the Arctic Pacific Environment," near Alaska.… Free Image from public domain license 
Gigantic Wave Discovered in Perseus Galaxy Cluster. A vast wave of hot gas in the nearby Perseus galaxy cluster. Original… Free Image from public domain license 
Illustrated in this artist's concept are two possible structures for asteroid 2011 MD. Original from NASA. Digitally enhanced… Free Image from public domain license 
A galaxy known as NGC 4656 or the Hockey Stick Galaxy, located in the constellation of Canes Venatici (The Hunting Dogs).… Free Image from public domain license 
Night falls for the Expedition 46 crew of the International Space Station. Original from NASA. Digitally enhanced by… Free Image from public domain license 
