The Gaia satellite has spotted an enormous ‘ghost’ galaxy lurking on the outskirts of the Milky Way

The Gaia satellite has spotted an enormous ‘ghost’ galaxy lurking on the outskirts of the Milky Way
This unusual collection of massive planets makes astronomers question how planets are formed
An international team of cosmologists have used data from the intergalactic medium – the vast, largely empty space between galaxies – to narrow down what dark matter could be
These winds spewing from these exotic objects can heat up and cool down in the span of just a few hours