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Red Dwarfs

Small, cool stars on the main sequence. Red dwarfs constitute the majority of stars and have a mass of less than one-half of the Sun.


Virgo, the virgin

Virgo October 4, 2011

The diagram shows the largest and smallest stars to scale.

Colorful Dwarfs May 21, 2010

Radio Programs

AU Microscopii Making life hard for young planets October 23, 2019

Sending a Message A concert for the stars October 15, 2019

Lacerta A little star with a big punch September 15, 2019

X-Ray Astronomy IV Little stars with big kicks January 10, 2019

Van Biesbroeck’s Star A feeble stellar discovery October 27, 2018

Lacaille 9352 A close but feeble neighbor November 19, 2017

Moon and Jupiter Primetime on the really big screen June 30, 2017

Faint Neighbors Two close but faint neighbors February 7, 2016

Proxima Centauri Discovering our closest neighbor September 9, 2015

Crackling Star Keeping an eye on a faint but busy star April 13, 2015

Featured Images

Artist's concept of AR Scorpii

Pulsing Corpse July 5, 2017

Hubble Space Telescope view of the Gliese 229 system

Faint Neighbors February 7, 2016

Artist's concept of Scholz's Star passing close to the solar system

Former Neighbor May 7, 2015

Superflare on one of the stars of DG Canum Venaticorum

Tiny Star, Big Outburst December 3, 2014

Three of the four planets that are known to orbit the red-dwarf star Gliese 581

Homey Star System April 28, 2010