National Aeronautics and Space Administration

Butch Wilmore and Suni Williams will spend additional weeks in orbit as teams on the ground study malfunctioning thrusters on the Starliner spacecraft.

Mike Bettwy, a government meteorologist who focuses on potential threats from space weather, says that we are more prepared than ever — and that forecasting is only getting better.

It was the second scheduled spacewalk by NASA astronauts aboard the space station that faced an interruption this month.

NASA canceled a spacewalk at the International Space Station Monday following a water leak, which started shortly after Tracy Dyson started to use the internal battery power of her spacesuit.

The farthest man-made object in space had been feared lost forever after a computer problem in November effectively rendered the 46-year-old probe useless.

He helped send the twin spacecraft on their way in 1977. Decades and billions of miles later, they are still probing — “Earth’s ambassadors to the stars,” as he put it.

La tormenta solar más fuerte registrada hasta ahora sirvió como recordatorio de los peligros de enviar seres humanos al planeta rojo.

Days after light shows filled Earth’s skies with wonder, the red planet was hit by another powerful outburst of the sun.

During the 1968 Apollo 8 mission, his color photograph of an emerging Earth, known as “Earthrise,” became an icon and driving force for the environmental movement.

Two NASA astronauts, Butch Wilmore and Suni Williams, opened the hatch of the spacecraft and boarded the outpost in orbit.