Major European powers threw their weight behind an unconditional 30-day Ukraine ceasefire on Saturday, with the backing of President Donald Trump, and threatened President Vladimir Putin with "massive" new sanctions…

All of the 133 cardinals expected to take part in the secret conclave to elect a new pope have arrived in Rome, the Vatican said on Monday, with the race…

The formation of a black hole can be quite a violent event, with a massive dying star blowing up and some of its remnants collapsing to form an exceptionally dense…