The abundance of low-mass compact objects, at or below the hydrogen-burning mass limit of 0.08M ⊙ (where M ⊙ is the solar mass), remains an open question. This abundance has implications for such ...

How do rogue planetary-mass objects -- celestial bodies with masses between stars and planets -- form? An international team of astronomers has used advanced simulations to show that these enigmatic ...

Several hundred million years ago, two galaxy clusters in Abell 2384 collided and then passed through each other. Galaxy clusters are the largest objects in the universe held together by gravity, and ...