Nasa has glimpsed a ‘green blob’ in the middle of a strange part of space called the Fireworks Galaxy.
The ‘pops of blue and green’ in the image above are actually bright bursts of invisible X-ray light captured by the NuSTAR space observatory.
‘Ten days is a really short amount of time for such a bright object to appear,’ said Hannah Earnshaw, a postdoctoral researcher at Caltech.
Instead, it’s called a ultraluminous X-ray source and has been named ULX-4 because its the fourth such outburst detected in the Firework Galaxy.
Earnshaw has just published a study which suggests the green glow came from a black hole ‘consuming another object, such as a star’.
Nasa wrote: ‘If an object gets too close to a black hole, gravity can pull that object apart, bringing the debris into a close orbit around the black hole.
However, ULX-4 may also be caused by another phenomenon, such as a neutron star – which form after a supernova when a star does not turn into a black hole.