According to new research published in the journal Nature Astronomy, scientists have recently discovered an impressive number of these elusive exoplanets: 70 or more.
" — free-floating planets that wander aimlessly through space without a host star to orbit. But they thought it was a somewhat rare phenomenon, until now., scientists have recently discovered an impressive number of these elusive exoplanets: 70 or more. It marks the largest such group ever spotted roaming the Milky Way — and it may be a crucial step in understanding the origins of the "mysterious galactic nomads," scientists say.
"We measured the tiny motions, the colors and luminosities of tens of millions of sources in a large area of the sky," explains Miret-Roig. "These measurements allowed us to securely identify the faintest objects in this region, the rogue planets." "We used tens of thousands of wide-field images from ESO facilities, corresponding to hundreds of hours of observations, and literally tens of terabytes of data," said project leader Hervé Bouy.
And finding more of these types of celestial travelers will help scientists understand their origins. Some hypothesize that they form from the collapse of a gas cloud that is too small to form a star companion, while others believe they could have been booted from their original parent system.
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