NASA's Christina Koch returned to Earth safely on Thursday after  shattering the spaceflight record for female astronauts with a stay of almost 11 months aboard the International Space Station.

A massive, decade-long study sequencing the genomes of dozens of cancers has revealed the secrets of how tumors form and may pave the way for better and more targeted treatment. 

Europe's physics lab CERN on Wednesday said it had stopped using a Facebook team-chat application because of concerns about handing over data to the U.S. tech giant.

A huge telescope built on the peak of a Hawaiian island has produced pictures of the Sun's surface in unprecedented detail, revealing boiling plasma cells the size of Texas. 

NASA said Monday that its planet hunter satellite TESS had discovered an Earth-sized world within the habitable range of its star, which could allow the presence of liquid water.

A Chinese court on Monday sentenced the doctor who claimed to be behind the world's first gene-edited babies to three years in prison for illegal medical practice, state media reported.

NASA's Mars 2020 rover will head off for the Red Planet next year. But like Voyager, Galileo and Cassini before it, the mission's epic journey began in a "clean room" in California.

China Friday launched one of the world's most powerful rockets in a major step forward for its planned mission to Mars in 2020.

On a Baltic Sea island once used by the Nazis for biological weapon research, German scientists are developing virus vaccines that could save lives.

Skywatchers from Saudi Arabia and Oman to India and Singapore were treated to a rare "ring of fire" solar eclipse Thursday.

Annular eclipses occur when the Moon is not close enough to the Earth to completely obscure the Sun, leaving a thin ring of the solar disc visible.