Search results
3 days ago · TRAPPIST-1 is a cool red dwarf star with seven known exoplanets. It lies in the constellation Aquarius about 40.66 light-years away from Earth, and has a surface temperature of about 2,566 K (2,290 °C; 4,160 °F). Its radius is slightly larger than Jupiter and it has a mass of about 9% of the Sun.
People also ask
Which stars contribute the most to local stellar mass density?
Is Proxima Centauri A red dwarf star?
What color is a red dwarf?
Does a red dwarf look like a green star?
Jun 25, 2024 · This image shows the bright stars within 15 parsecs of the Sun. If red dwarfs and brown dwarfs were included, there would be far more stars. But those stars are difficult to spot.
Jun 25, 2024 · As a red dwarf star—the most common type of star—Proxima Centauri is about seven times smaller than the Sun and a little more than half as hot, at 3,100 kelvins. In fact, the tiny star is only 50 percent larger than the planet Jupiter .
3 days ago · With a visual apparent magnitude of −1.46, Sirius is almost twice as bright as Canopus, the next brightest star. Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf companion of spectral type DA2, termed Sirius B.
6 days ago · Stellar classification. In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines.
6 days ago · The most common stars and those that contribute the most to the local stellar mass density are the red dwarf M (dM) stars, which provide a total of 0.0026 star per cubic light-year. White dwarf stars , which are difficult to observe and of which very few are known, are among the more significant contributors.
Jun 10, 2024 · These are novae, where a burned-out star, a white dwarf, ingests gas from a bloated red giant companion it is orbiting. One of the strangest of these events happened in 1975, when a nova called HM Sagittae grew 250 times brighter.
