This page contains a list of all spectroscopically confirmed ultracool objects up to date. The list was mostly built upon the “L, T and Y Dwarf Census Through February 2014“, constructed by …

We search for and spectroscopically characterize the coldest T- and Y-type brown dwarfs through our collaboration with Backyard Worlds: Planet 9; and investigate atmospheric phenomenon, …

Feb 16, 2009 · We selected ultra-cool dwarf candidates from the SDSS DR7 with new photometric selection criteria, which are based on a parameterization study of known L and T dwarfs. The …

An ultra-cool dwarf is a stellar or sub-stellar object of spectral class M that has an effective temperature under 2,700 K (2,430 °C; 4,400 °F). TRAPPIST-1 is one of the best known …

Feb 28, 2025 · When a star less massive than about eight times the mass of the Sun dies, it leaves behind a white dwarf: a crystallized stellar core roughly the size of Earth.With initial …

Jan 10, 2023 · The newly discovered system, named LP 413-53AB, is composed of a pair of ultracool dwarfs, a class of very low-mass stars that are so cool that they emit their light …

Mar 7, 2017 · NASA's Kepler space telescope finished observing the planets and made its data public today. On Feb. 22, astronomers announced that the ultra-cool dwarf star, TRAPPIST-1, …

May 2, 2016 · Astronomers using the TRAPPIST telescope at the European Southern Observatory’s (ESO) La Silla have discovered three planets orbiting an ultracool dwarf star …

Feb 28, 2023 · Scientists have discovered a record-breaking binary star system consisting of two ultracool dwarf stars so close to each other that they complete an orbit in under a day. The …

May 15, 2024 · An international team of astronomers has detected a new, Earth-sized planet just 55 light years away, orbiting an ultra-cool red dwarf star.

May 15, 2024 · An international scientific team confirms the existence of an Earth-sized planet orbiting an ultra-cold red dwarf located about 55 light-years from our planet.

May 2, 2016 · Now for the first time, our international team has found Earth-sized planets around a type of star so extreme it’s referred to as an “ultracool dwarf.” This is the first time planets …

Mar 10, 2017 · Transiting planets block a tiny fraction of starlight that produces miniscule dips in the brightness of their host star. An Earth-size planet passing in front of a small ultra-cool …

Dec 1, 2023 · Scientists have discovered a planet that is way too big for its tiny star. Its existence could upend everything we thought we knew about how solar systems form, researchers say. …

5 days ago · This dwarf galaxy, named Andromeda XXXV and located roughly 3 million light-years away, is forcing astronomers to rethink how galaxies evolve in different cosmic environments …

Mar 5, 2025 · Corydoras pygmaeus has an elongated tail with a long black stripe across its back from its nose to tail, while habrosus is rounder with brown speckles all over its body.. Unique …

1 day ago · Snow White dwarf Martin Klebba responds to Disney scaling back the movie premiere for the live-action adaptation ... [Theatre], which is cool. But it’s basically going to be a pre …