In a groundbreaking study published in The Astrophysical Journal, astronomers have discovered high-velocity gas clouds near ...

Unusually fast-moving gas clouds near a nearby galaxy suggest they may have come from outside the galaxy. Scientists have ...

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

We share your best smartphone photos selected as AP's Smartphone Picture of the Week, taken by you - the readers! The post ...

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth ...