We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

NASA's leadership change comes at a pivotal moment for the agency, which is already bracing for potentially severe funding ...

Scientists have proposed a wild new theory at the Royal Astronomical Society's National Astronomy Meeting (NAM) in Durham - Earth, along with the entire Milky Way galaxy, may be situated within a ...

As the administration slashes spending on science, NASA is running low on new missions.

Your blood is also red because of a mixture of iron and oxygen in a molecule called hemoglobin. So in a way, the ancient ...

"Honestly, it's been a little devastating," Kevin Hardegree-Ullman, a scientist at the NASA Exoplanet Science Institute at ...

Thin water-ice clouds that are apparent in ultraviolet light give the Red Planet a frosty appearance. The icy northern polar ...

Footage from NASA/ESA Hubble Space Telescope that celebrates 35 years in space. Images of Mars, planetary nebula NGC 2899, Rosette Nebula and galaxy NGC 5335 to celebrate. Credit: NASA's Goddard Space ...

Footage from NASA/ESA Hubble Space Telescope that celebrates 35 years in space. Images of Mars, planetary nebula NGC 2899, Rosette Nebula and galaxy NGC 5335 to celebrate. Credit: NASA's Goddard ...

The Hubble Space Telescope, launched 35 years ago, has blown our minds with its striking images of far-away galaxies, black holes and planets including Jupiter and Mars.