Failed Star Shakes Up a Phosphine Cocktail
Brown dwarfs are objects that sit between planets and stars: they are more massive than planets but not heavy enough to sustain stable fusion in their cores.
A Tangled Skein: How Two Factors Drive Weather on a Lonely Planet
2,41 hours. That's exactly how long a day lasts on SIMP 0136 — a lonely planet-like object 6,1 parsecs away. That's twice as far as Proxima Centauri. Its mass ranges from 12,7 to 17,8 Jupiter masses, placing it on the boundary between planet and star.