Scientists have proposed that advanced alien civilizations could build a Dyson sphere around a black hole instead of a star. Black holes can release enormous amounts of energy through their accretion ...

Radio telescopes have long scanned quiet patches of sky for a lone, artificial-sounding ping, but a growing body of research ...

"This was many times more energetic than any similar event and more than any known explosion powered by the collapse of a ...

Polish Foreign Minister Radosław Sikorski voiced support for India as Washington weighs tariffs of up to 500% on countries ...

US President Donald Trump has approved moving forward with a bipartisan sanctions bill targeting countries that continue ...

Prime Minister Mark Carney will travel to China next week — the first visit to the country by a Canadian prime minister since ...