Astronomers have detected four small planets orbiting Barnard’s Star, one of the closest stars to Earth, at just six ...

Earth, HD 20794 d, in the habitable zone around a Sun-like star 20 light-years away. With a mass six times that of Eart ...

The most successful planet-hunting technique to date has been radial velocity, also called the Doppler wobble, with more than 400 newfound planets to its credit. Astronomers using this method look ...

Using in part the Gemini North telescope, one half of the International Gemini Observatory, partly funded by the U.S.

In deriving the equations governing cone-plate flow, Mooney and Ewart assumed that the sample moved in circular lamina only, with no radial component of velocity. This assumption has been ...