The sun may have a long-lost twin
Space and Ufo
US spy satellite launch delayed a week after abort in final seconds
Lab confirms first case of coronavirus reinfection in the US
New quantum paradox throws the foundations of observed reality into question
Is the Y chromosome dying out?
How long is a galactic year?
Black hole ‘hair’ could be detected using ripples in spacetime
How to build a universe after a big bounce
The end of the universe may be marked by ‘black dwarf supernova’ explosions
Clouds of star-forming gas are being shot ‘like bullets’ across the galaxy
Rainbow meteorite discovered in Costa Rica may hold building blocks of life
How Earth’s gravity changed record-breaking asteroid’s path forever
