Brown Dwarfs And Giant Planets

Brown Dwarfs And Giant Planets

Brown dwarf stars are often referred to as “failed stars” because they were born with insufficient mass to light their nuclear-fusing stellar fires–even though they formed just like their more massive, fiery, glaring, hydrogen-burning “true” star kin. Because of their puny size, astronomers have found it difficult to distinguish brown dwarfs from giant planets, such …

Icy Quartet

Icy Quartet

Icy Quartet Galileo discovered Europa in January 1610, along with three other large moons that have been named Galilean moons in his honor: Io, Ganymede and Callisto. On several clear starlit winter nights, Galileo climbed up to the roof of his house in Padua, and discovered the distant Jovian quartet. He accomplished this using only a primitive …