NASA astronaut Terry Virts is seen here in the International Space Station's Cupola module.
NASA astronaut Terry Virts is seen here inside the station's Destiny laboratory.
Expedition 43 Commander and NASA astronaut Terry Virts creates a sphere of bubbles.
NASA astronaut Scott Kelly is seen here inside the station's Destiny laboratory.
Celebrating Flag Day on June 14, 2015, NASA astronaut Scott Kelly took this photograph in the cupola of the International…
Two members of the U.S. Navy's Mobile Diving Salvage Unit (MDSU) 1 Explosive Ordnance Detachment work on recovering the test…
The RS-25 engine fires up at the beginning of a 500-second test June 11 at NASA's Stennis Space Center near…
Bio-mass burning in Central Africa readies the fields for new planting.
This diagram illustrates how hypothetical helium atmospheres might form.
Planets having atmospheres rich in helium may be common in our galaxy, according to a new theory based on data…
