Despite being 3,400 times the mass of the sun and just 300 light-years away, the hydrogen cloud had gone unnoticed until now.

It's named Eos, after the Greek goddess of the dawn, and contains approximately 3,400 solar masses worth of gas.

The cloud, named Eos, is chock-full of molecular hydrogen and possibly rife with star-forming potential in the future.

The dark nebula is part of the Circinus West molecular cloud, which stretches for 180 light-years, containing a mass 250,000 ...

It's huge, and it's been hidden for this whole time': Gigantic, glow-in-the-dark cloud near Earth surprises astronomers Among ...

Astronomers finally spotted a previously 'invisible' object near our solar system when they realized it was actually glowing ...

On the night side of Jupiter, an infrared glow high up in the atmosphere ... information for the detection of dark matter on other planets outside the Solar System. "We have pointed out and ...