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Unravelling the Mystery of Brown Dwarfs

Illustration-Nolan_Grieves-Scientists_Characterize_Five_Exotic_Astronomical_Objects-WebUnige.jpg
This artist’s illustration represents the five brown dwarfs discovered with the satellite TESS. These objects are all in close orbits of 5-27 days (at least 3 times closer than Mercury is to the sun) around their much larger host stars. Â© 2021 Creatives Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) – Thibaut Roger – UNIGE

Brown dwarfs are astronomical objects with masses between those of planets and stars. The question of where exactly the limits of their mass lie remains a matter of debate, especially since their constitution is very similar to that of low-mass stars...

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