The answer: There are approximately 2,000,000,000,000 galaxies in the universe – that’s 2 trillion. Astronomers don’t know ...

But an international team of astronomers have detected the unmistakable signature of a gas giant planet orbiting the ...

New observations show a star that blew up in two separate bursts, confirming a long-suspected cosmic phenomenon called a ...

Planetariums were a hit with the public. Within decades, they had spread around the world – the first planetarium in the ...