Tootfinder

We’re not yet sure whether TOI-2155b is quite a star.
But it seems to live on the fascinating boundary between a celestial beacon blazing through the heavens and a failed star that never quite ignites sustained hydrogen fusion.
If an object isn’t quite big enough to generate much pressure
– or if fusion doesn’t really kick off properly for some other reason
– the gas becomes a kind of “failed star” known as a brown dwarf.
These objects are hot early in life,

TOI-2155 b: A Massive Brown Dwarf or a Very Low-mass Star?
TOI-2155 b: A Massive Brown Dwarf or a Very Low-mass Star?, Ahmed, Md Redyan, Daylan, Tansu, Carmichael, Theron W., Casewell, Sarah L., Hafner, Anita, Alvarado-Montes, Jaime A., Bieryla, Allyson, Quinn, Samuel N., Calkins, Michael, Collins, Karen A., Watkins, Cristilyn N., Stassun, Keivan G., Safonov, Boris S., Goliguzova, Maria V., Marino, Giuseppe, Conti, Dennis M., Tuthill, Peter

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