European Space Agency astronaut Alexander Gerst, Expedition 41 flight engineer, uses a digital still camera to expose a photo of…
Dryden used an F/A-18 Hornet fighter aircraft as its Systems Research Aircraft (SRA). A primary objective was to identify and…
High-energy X-rays streaming from a rare and mighty pulsar (magenta), the brightest found to date, can be seen in this…
NASA astronaut Scott Kelly, wearing an Extravehicular Mobility Unit (EMU) spacesuit.
Lithuanian Prime Minister Algirdas Butkevičius visited NASA Headquarters in Washington, DC Monday, Oct. 6, 2014 to witness the signing of…
The galaxy Messier 82 (M82) is seen here in two different lights. A visible-light view from NASA's Hubble Space Telescope…
This chart illustrates the relative masses of super-dense cosmic objects, ranging from white dwarfs to the supermassive black holes encased…
This image shows the core of galaxy Messier 82 (M82), where two ultraluminous X-ray sources, or ULXs, reside (X-1 and…
The brightest pulsar detected to date is shown in this animation that flips back and forth between images captured by…
This panorama view, photographed by an Expedition 40 crew member on the International Space Station, shows tan-colored dust of a…
