Antlia 2 (circled) next to the Milky Way (the almost vertical band running down the image) ESO

Hidden in plain sight behind the disc of dust and gas that makes up the Milky Way there is a ghostly galaxy that looks like no other we’ve seen before. Or, at least, that’s what one group of astronomers claims – but another researcher has questioned their discovery.

The newly detected dwarf galaxy is a third the size of the Milky Way. It’s located in the Antlia constellation. It is known as Antlia 2 – or Ant 2.

“It has a brightness …