A mysterious object roughly 800 million light years from Earth detected using gravitational wave sensors is either one of the smallest black holes or one of the largest neutron stars so far discovered, scientists said on Wednesday.

Skywatchers along a narrow band from west Africa to the Arabian Peninsula, India and the Far East witnessed Sunday a dramatic "ring of fire" solar eclipse.

Scientists have observed the fifth state of matter in space for the first time, offering unprecedented insight that could help solve some of the quantum universe's most intractable conundrums, research showed Thursday.

Scientists have developed a human embryo "blueprint" using human stem cells, in a breakthrough that could provide vital insight into the early stages of infant development, new research showed Thursday.

New Zealand said Tuesday it will reduce its scientific projects in Antarctica to keep the virtually uninhabited continent free from COVID-19.

Antarctica New Zealand, the government agency that does environmental research on the desolate landmass and the Southern Ocean, said limiting the number of people visiting was key to stopping the spread of the coronavirus.

Iranian scientist Sirous Asgari has arrived back in Iran after being released from prison by its arch-foe the United States, Iranian media reported Wednesday.

The Tasnim, ISNA and Mehr news agencies all carried the same photograph on their Telegram accounts of Asgari, wearing a face mask against the coronavirus, being reunited with his family.

The multinational team on the biggest Arctic research mission ever undertaken were prepared for problems from polar bear attacks to major snowstorms or even issues with building a runway on ice.

NASA astronauts entered the International Space Station on Sunday after a landmark 19-hour journey on the first crewed US spacecraft in nearly a decade, a triumph for SpaceX and private enterprise.

The World Health Organization on Friday urged countries, companies and researchers to pull down the barriers and open up their findings on COVID-19 as it unveiled a global knowledge-sharing platform.

Dutch authorities on Friday reported the country's first coronavirus case in a dog and infections in three cats, but said chances of contamination through pets were minimal.