Lt Ryan Graves, one of five US navy pilots who said  they saw unidentified flying objects in 2014 and 2015 during training manoeuvres off the aircraft carrier USS Theodore Roosevelt. Photograph: Tony Luong/The New York Times

The strange objects, one of them like a spinning top moving against the wind, appeared almost daily from the summer of 2014 to March 2015, high in the(...)

Katie Bouman was among a team of 200 researchers who contributed to the breakthrough to create the photograph of a black hole. Photograph: MIT CSAIL

As the first-ever picture of a black hole was unveiled this week, another image began making its way around the internet: a photo of a young scientist(...)

 A supermassive black hole with millions to billions times the mass of our sun is seen in an undated NASA artist’s concept illustration. Photograph:  NASA/Reuters

Scientists are expected to unveil next Wednesday the first photograph of a black hole, a breakthrough in astrophysics providing insight into celestial(...)

Astronomer Dr David Charbonneau, from the Harvard-Smithsonian Center for Astrophysics in the US, said: “Our ultimate goal is to find a twin Earth, but along the way we’ve found a twin Venus.” File photograph: Twitter

A Venus-like rocky planet 39 light years from Earth could provide astronomers with an early opportunity to study the atmosphere of a world outside our(...)