Brown dwarf research is a subfield of astrophysics focused on objects with masses between the heaviest gas giant planets and the lightest stars, insufficient to sustain stable hydrogen fusion. This research area investigates their formation pathways, atmospheric chemistry and dynamics, internal structure, cooling and evolutionary tracks, and spectral classification (e.g., L, T, and Y types). It leverages multiwavelength observations, high-resolution spectroscopy, and theoretical modeling to constrain substellar mass functions, metallicities, cloud physics, and magnetic activity, and to calibrate brown dwarfs as analogs for exoplanet atmospheres and as benchmarks for testing low-temperature equation-of-state and radiative-transfer models.
In the course of studying planets beyond our solar system (6,316 confirmed exoplanets and counting), scientists have discovered some very interesting systems. Consider TOI-201, a compact system populated by three bodies, ...
Astronomy
Jul 6, 2026
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A star called TOI-2155 lies around 1,350 light-years (839 trillion miles) from Earth. It is a little bigger, heavier and hotter than the sun, and it is not particularly interesting or unusual in itself.
Astronomy
Jul 2, 2026
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Northwestern University-led astronomers have discovered salty skies surrounding the universe's famous "Pink Planet." For more than a decade, the ancient, rosy-hazed world kept astronomers guessing. One of the coldest known ...
Astronomy
Jun 18, 2026
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A team of astronomers, led by Brooke Kotten of the University of Michigan, has shown that TOI-5882—a sunlike star located some 1,300 light-years away—has likely eaten one of its planets.
Astronomy
Jun 15, 2026
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Our sun is a loner. It lacks a stellar companion hurtling through interstellar space with it. But we've known for a long time that that's actually relatively rare—most stars have at least one gravitationally bound partner. ...
Planetary Sciences
May 27, 2026
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If you've ever taken an introductory astronomy class, you've probably seen the Hertzsprung-Russell (HR) diagram. This graph maps out the life cycle of stars by plotting their temperature against their luminosity, and has ...
Astronomy
May 12, 2026
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A new paper from NASA's Backyard Worlds: Planet 9 project announces that volunteers have essentially doubled the number of known brown dwarfs, with over 3,000 new discoveries made over the past 10 years since the project ...
Planetary Sciences
May 5, 2026
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Exoplanet science and the search for life beyond Earth continue to advance at break-neck speeds, with the number of confirmed exoplanets by NASA rapidly approaching 6,300, with 223 of those exoplanets being designated as ...
Space Exploration
May 2, 2026
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Astronomers at the University of Hawaiʻi have precisely measured the age of a nearby sun-like star and its unusual companion, known as a brown dwarf, an object that falls between a planet and a star. The discovery offers ...
Astronomy
Apr 21, 2026
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For some time, astronomers have theorized that there is a connection between planetary mass and rotation. In the solar system, Jupiter and Saturn both rotate rapidly, completing a rotation in roughly ten hours, while accounting ...
Planetary Sciences
Apr 5, 2026
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