There’s more to see...
Sign up to discover and save different things to try in 2015.
Visit Site
  • Mona Evans

    Castor. Wow - what a star! Single to the eye, a triple in a telescope and six altogether. Illustration not to scale. bob king

  • Mona Evans

    The star Castor in Gemini. You can resolve it into three stars in a small telescope, but each of the stars has a companion. Castor is really a sextuple star system. (The diagram is not to scale.)

Also on these boards

Related Pins

A STAR'S BIRTH AND DEATH --- In this graphic discover what takes for a star to be born. By Jason Treat and Alexander Stegmaier. Published on March 2014

Arcturus – Sun comparison. (Illustration – Bob King) The Sun looks very small compared to red giant Arcturus. Mona Evans, "How Big Are the Biggest Stars" www.bellaonline.c...

Procyon is the seventh brightest star in the sky and one of the vertices of the Winter Triangle. It's one of our nearest neighbors at just over 11 light years away in the constellation Canis Minor. Procyon is a binary star system, composed of a white main sequence star and a white dwarf star.

Open star cluster Messier 50 Canada-France-Hawaii Telescope / Coelum

Part of the Great Nebula of Orion. Observing the nebula with binoculars or a telescope,

A Hubble Space Telescope image of Proxima Centauri, the closest star to Earth. Credit: ESA/Hubble & NASA

Sol's stellar relatives: Classification of Stars chart