A new theoretical model of dark matter suggests it contains two distinct varieties of charged particles, which would allow it to form compact objects.
The planets sit in a galaxy 3.8 billion light years away.
The galaxy cluster, featured in a Hubble Space Telescope photo, weighs in at three million billion suns.
The ancient embryonic galaxy existed just 500 million years after the start of the universe.
It belongs to "a class of mythical beasts in astrophysics," and there may be many more waiting to be discovered.
A newly “ancient” galaxy may help us better understand how and why galaxies take on their many beautiful shapes and forms.
The galaxy in question appears as it was 11 billion years ago, just 2.7 billion years after the Big Bang.