TESS

Three planets a little larger than Earth have been statistically validated around TOI-789, a small, cool red star 43 parsecs away, or roughly 140 light-years, in a paper published Oct. 7, 2026, in…

A reanalysis of ultraviolet spectra the Hubble Space Telescope took in 1999 has found the white dwarf HS 0209+0832, the burnt-out core of a dead star, pulling in material that matches nothing in the…

Astronomers have confirmed a planet about twice the width of Earth orbiting TOI-210, a small, cool red dwarf, once every 9.01 days. The result comes from a preprint posted to arXiv on Sept. 28 by a…

An international team led by the University of Geneva has measured the orbit of the planet GJ 3090 b and found it running backward. The planet circles its star in the direction opposite to the star's…

A team led from the University of Tokyo has found a giant planet that circles a hot star every 2.17 days on an orbit still stretched into an oval rather than round. Noriharu Watanabe and colleagues…

Astronomers have measured the mass and the size of a candidate planet that never passes in front of its star, working from the light it reflects. The result was published Aug. 25 in Astronomy &…