Robert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.
At the end of 2023, astronomers made a startling discovery in the Orion Nebula. Using the James Webb Space Telescope , the team found 40 pairs of planetary mass objects — none of which orbit a star. They're called Jupiter-Mass Binary Objects, or JuMBOs.of these bodies came to wander the Orion stellar nursery, which is located around 1,350 light-years from Earth.
As hot, gassy and binary bodies, JuMBOs may initially seem as if they form when overly dense regions in a clouds of gas and dust collapse. That's how stars form, and is even the mechanism followed by so-called"failed stars," or, which get their nickname from the fact they fail to gather enough mass to fuse hydrogen to helium in their cores — a defining stellar characteristic.
So, to solve the mystery of where JuMBOS could possibly come from, the team performed advanced supercomputer simulations of ejection events. These"N-body" simulations allowed them to explore interactions inthat could mean massive planets are ejected but remain gravitationally bound to each other.
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