W1055+5443 is a Y-type brown dwarf, observations find

Using the Keck II telescope, astronomers have performed near-infrared spectroscopic observations of a nearby brown dwarf known as CWISE J105512.11+544328.3, or W1055+5443 for short. Results of the observational campaign, ...

Two Neptune-sized exoplanets discovered with TESS

An international team of astronomers reports the detection of two new exoplanets orbiting a bright star known as TOI-5126, using NASA's Transiting Exoplanet Survey Satellite (TESS). The newfound alien worlds are similar in ...

Webb detects quartz crystals in clouds of hot gas giant

Researchers using NASA's James Webb Space Telescope have detected evidence for quartz nanocrystals in the high-altitude clouds of WASP-17 b, a hot Jupiter exoplanet 1,300 light-years from Earth.

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