A report suggests that snakes – the Chinese krait and the Chinese cobra – might have been the original source of the coronavirus that's triggered an outbreak of deadly infectious respiratory illnesses in China this year.

Watch the last of January's 3 International Space Station spacewalks tomorrow.

Cast your vote to help name the next Mars rover, scheduled to launch in July or August 2020. The names were drawn from 9 finalist essays written by K-12 students. The voting will remain open through January 27.

Byrd received the prize from the American Astronomical Society, the largest organization of U.S. astronomers. The prizes are given for outstanding achievements in scientific research, education, scholarly writing, and service to the astronomical community.

For future homes on the moon, Mars, and other worlds, NASA is exploring technologies that would use mushrooms to grow self-repairing, self-replicating habitats.

Nearly a decade after the nuclear accident in Fukushima, researchers have found that wildlife populations are abundant in areas now devoid of human life.

For the first time, NOAA’s 2019 Arctic Report Card includes an indigenous perspective of the changes taking place in Arctic ecosystems.

The Earth might be crawling with undiscovered alien creatures whose biochemistry is very different from life as we know it. An astrobiologist explains.

According to independent analyses by both NASA and NOAA, Earth's global surface temperatures in 2019 ranked 2nd-warmest since 1880.

According to the UK's Met Office, each decade from the 1980s has been successively warmer than all the decades that came before. 2019 concludes the warmest ‘cardinal’ decade (those spanning years ending 0-9) in records that stretch back to the mid-19th century.