The Soyuz spacecraft that will take Scott Kelly to the space station. Blast off is scheduled for 3:42 p.m. Eastern time on Friday.
NASA hopes to learn more about physical and psychological effects of space travel from the mission of Scott J. Kelly, who will have spent more time in space than any American when he returns.
Scott Kelly is the first American astronaut to head into space for a year. He arrived at the International Space Station Friday with two Russians. See how the launch went with bits of trivia and photos.
As officials warned of possible power failures and encouraged people to view the phenomenon only through special glasses, excitement grew for the rare celestial event.
Energy operators reliant on the sun prepared for a day of headaches as a total eclipse coincided with a supermoon.
Friday’s eclipse appeared total only on the Faroe Islands and in Svalbard, Norway, but it can be seen without going farther than your computer.
Enceladus, a moon of Saturn, appears to have a roiling ocean with hydrothermal vents, while Ganymede, orbiting Jupiter, may have an ocean under ice, researchers report in two new papers.
The Magnetospheric Multiscale mission, consisting of four identical spacecraft, will study a phenomenon that is key to understanding solar storms.
A selection of images from NASA’s Curiosity rover as it drives toward Mount Sharp.
The European Space Agency’s Rosetta spacecraft dropped a lander onto the rubber-duck-shaped Comet 67P/C-G and is following it as it swings closer to the sun.
Though it is sedate in comparison with other stars, our sun is a volatile neighbor, a thermonuclear furnace fueling spectacular storms that send high-energy particles and radiation far out into space.
Dawn has arrived at the dwarf planet Ceres, a Texas-size ball of ice and rock.
The New Horizons spacecraft is now closer to Pluto than Earth is to the sun.
Astronomers have found a recipe for rocky, Earth-like planets orbiting other stars.