Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and several ground-based facilities, astronomers have discovered a long-period sub-Neptune exoplanet orbiting TOI-2257. Intriguingly, the planet’s orbit is highly elliptical, suggestive of a possible perturbing outer gas-giant planet in the TOI-2257 system.
Astudy has found that exoplanets orbiting red dwarf stars may not be as badly affected by stellar radiation as scientists had previously suspected.
With over 4,000 confirmed exoplanets, we’re starting to get an idea of which types are common and which are rare. We’ve learned that our solar system is rather unusual in ways you wouldn’t expect. Take, for example, the presence of large planets orbiting small stars.
Astronomers have detected five new planets, eight planet candidates, and confirmed three previously reported planets, around nine nearby M-dwarf (red dwarf) stars. Among the new planets, Gliese 180d and Gliese 229Ac are super-Earths located in the conservative habitable zones of their host stars; Gliese 433c is a cold super-Neptune candidate belonging to an unexplored population of Neptune-like planets.
Using NASA’s Transiting Exoplanet Survey Satellite, the agency’s Spitzer Space Telescope and other facilities, astronomers have discovered a compact system of three small planets orbiting around the cool M-dwarf star TOI-700. One of these planets, named TOI-700d, has a radius of 1.1 times that of the Earth and orbits within the conservative habitable zone of its host star.
Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and multiple ground-based telescopes, astronomers have discovered an ultra-short-period exoplanet orbiting a red dwarf star called Gliese 1252.
The word “HAZMAT” describes substances that pose a risk to the environment, or even to life itself. Imagine the term being applied to entire planets, where violent flares from the host star may make worlds uninhabitable by affecting their atmospheres.
Scientists have discovered mystery signals coming from a star 11 light-years away. The “very peculiar” pulses appear to be unique to the red dwarf, scientists say, with observations of similar nearby stars showing no similar behavior.
Unusual X-ray emissions coming from four old red dwarf stars suggest these old fogeys have something in common with our sun: their magnetic fields are weakening over time, new research shows.
Will Red dwarf stars hold planets with life on them?
