Spacecraft finds a positively enormous planet 12 times Jupiter's mass
Gaia-4b is considered a super-Jupiter planet, a relatively cold gas giant, orbiting its star over 570 Earth-days. That star ...
Yahoo8d
Giant planet or 'failed star?' Newfound mystery world blurs the lines
Five remain inconclusive. One is a star orbited by a brown dwarf — an object that straddles the line between planet and star — now named Gaia-5b, and one turned out to be a planet, Gaia-4b.
University of Manchester6mon
‘Stellar cannibalism’ transforms star into brown dwarf
Dr. Rene Breton The study used the X-Shooter instrument ... by the host star completely overwhelms the planet’s internal heat flux. By contrast, internal heat flux and external irradiation are ...
Science Daily10d
Wobbling stars reveal hidden companions in Gaia data
Gaia-4b and 5b: Radial Velocity Confirmation of Gaia Astrometric Orbital Solutions Reveal a Massive Planet and a Brown Dwarf Orbiting Low-mass Stars. The Astronomical Journal , 2025; 169 (2): 107 ...
RealClearScience1mon
What Makes Brown Dwarfs So Weird?
Meet the brown dwarf: bigger than a planet, and smaller than a star. A category of its own, it’s one of the strangest objects in the universe. Brown dwarfs typically are defined to have masses ...
Phys.org11d
High-resolution observations shed more light on a peculiar brown dwarf system
Using the Keck Planet Imager and Characterizer ... nature and properties of this object. Brown dwarfs (BDs) are intermediate objects between planets and stars, occupying the mass range between ...
Business Today3mon
First-ever brown dwarf planet discovery reveals surprise binary system after 3 decades
Brown dwarfs sit between planets and stars. They are not massive enough to sustain hydrogen fusion like stars but are heavier than large planets. They burn deuterium, a heavy form of hydrogen ...