Though the dwarf planet Eris on the edge of the solar system is much denser than Pluto, the two frigid worlds are nearly exactly the same size, a new study finds. Subscribe to read this story ad-free ...

Three notable celestial bodies are seen as lit crescents, one in the foreground takes up half the image, the second is much smaller at the top, with a shining third near the bottom right as the first ...

Scientists have discovered a “greedy” white dwarf star that is “going thermonuclear” as it devours its twin at an unprecedented rate. An international team of astronomers found that the double star, V ...

The twin brown dwarf stars of Luhman 16AB move together and around each other as they cross the sky in their orbital dance. A NASA/ESA Italian-led research team used three years of high-precision ...

Though the dwarf planet Eris on the edge of the solar system is much denser than Pluto, the two frigid worlds are nearly exactly the same size, a new study finds. Astronomers accurately measured Eris' ...