Donald Trump has shifted his tone dramatically on Ukraine in meetings at the UN in New York, suggesting the country can win ...

Researchers think a mysterious signal, dubbed GW190521, could have arrived from a parallel universe after passing through a ...

Irish physicist William Rowan Hamilton’s pioneering work contained hints of the enigmatic wave–particle duality that governs the universe.

The Irish mathematician and physicist William Rowan Hamilton, who was born 220 years ago last month, is famous for carving some mathematical graffiti ...