Flare stars

star in Centaurus constellation

star in the constellation Gemini

red dwarf star in the constellation of Ophiuchus

red dwarf in the constellation Leo

type of eruptive variable star that can undergo unpredictable dramatic increases in brightness for a few minutes

binary star in the constellation Cetus

small star in the equatorial zodiac constellation of Virgo

star

star in the constellation Aquarius

triple star system in the constellation Eridanus

binary system in the constellation Lepus

star in the constellation Cetus

binary star system in the constellation of Andromeda

star in the constellation Sculptor

star in the constellation Monoceros

star in the constellation Microscopium

star in the constellation Sextans

nearby flare star in constellation Aries

star system in the constellation Dorada

red dwarf star in the constellation Cancer

star in the constellation Boötes

star in the constellation Microscopium

binary star in the constellation Cepheus

star in the constellation Draco

star in the constellation Lacerta

star in the constellation Ursa Major

binary star in the constellation Ursa Major

binary star in the constellation Virgo

star in the constellation Leo

Kepler-438 is a red dwarf in the constellation Lyra, about 590 light years from Earth. It is notable for its planetary system, which includes Kepler-438b, a possibly Earth-size planet within Kepler-438's habitable zone. Kepler-438 is a flare star that undergoes random, dramatic increases in brightness due to flare activity. It emits strong superflares every few hundred days, with each flare being stronger than the most powerful flare recorded on the Sun.

ultracool dwarf

star

Star in the constellation Draco

star

star

star in the constellation Aquila

thumb | right | alt=Illustration of a bright plume coming out of a star | Artist's impression of a superflare from EV Lacertae Superflares are very strong explosions observed on stars with energies up to ten thousand times that of typical solar flares. The stars in this class satisfy conditions which should make them solar analogues, and would be expected to be stable over very long time scales. The original nine candidates were detected by a variety of methods. No systematic study was possible until the launch of the Kepler space telescope, which monitored a very large number of solar-type st

star in the constellation Draco

star in the constellation Canis Minor

star

star in the constellation Cassiopeia

star in the constellation Auriga

star in the constellation Microscopium

star in the constellation Carina

nearby star i the constellation Cancer

star in the constellation Andromeda

star in the constellation Columba

star in the constellation Cancer

star in the constellation Lacerta

star in the constellation Delphinus

star in the constellation Draco

star in the constellation Microscopium

star

Binary star

star in the constellation Cancer

nearby red dwarf in the constellation Boötes