Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

One fascinating discovery was the detection of vast clouds of gas extending far beyond the main star-forming regions. These ...

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

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 ...

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