The closest star to the Earth and the center of the solar system.


Facts and Figures The biggest, farthest and fastest in the...
Our Star, the Sun By human standards, the Sun is eternal. It rises...

Radio Programs

Moon and Aldebaran Igniting the core of a star Saturday, July 11, 2015
Solar Nap The Sun takes a long nap Thursday, April 30, 2015
Unpredictable Sun Predicting our unpredictable Sun Wednesday, April 29, 2015
Brighter Sun The Sun gets a lot brighter Tuesday, April 28, 2015
Solar Fusion The Sun shines on and on and on Monday, April 27, 2015
Spring Storm Making a mess of Easter Sunday Tuesday, March 24, 2015
Solar Max Taking a look at the busy Sun Saturday, February 14, 2015
Feeling the Heat Looking at the Sun from near and far Friday, July 4, 2014
Beta Coma Berenices A star that’s a lot like our own Saturday, April 26, 2014
Sunquakes Rumbling through the Sun Sunday, June 9, 2013
At the Edge At the edge of the solar system Saturday, June 8, 2013
Young-Sun Paradox II A weight-loss plan for the Sun Friday, June 7, 2013
Young-Sun Paradox Turning up the thermostat Thursday, June 6, 2013
Changing Sun Our steadily changing Sun Wednesday, June 5, 2013
New Solar Telescopes New eyes on our neighborhood star Tuesday, June 4, 2013
Solar Telescopes Taking a close look at the Sun Monday, June 3, 2013
Solar Twins A star that looks familiar Saturday, June 1, 2013
Skylab High-flying eyes on the Sun Tuesday, May 14, 2013
The Sun III Looking for the surface of the Sun Wednesday, December 19, 2012
The Sun II The long trip before the journey begins Tuesday, December 18, 2012
The Sun Powering up the Sun Monday, December 17, 2012
Unproductive Sun Outshining the Sun — sort of Monday, June 18, 2012
Solar Spotters Getting a better bead on the Sun Wednesday, June 6, 2012
Venus and Aldebaran The demise of a star and planet Sunday, April 8, 2012
Looking Deep Looking for storms before they’re born Monday, February 13, 2012
Near the Edge Nearing the edge of the solar system Monday, November 14, 2011
X Factor The Sun’s “X” factor Monday, October 10, 2011
Weather Forecasts Expanding the daily weather forecast Saturday, August 6, 2011
Space Weather Nasty weather from beyond Earth Friday, August 5, 2011
The Sun Shines Stoking the fires of the Sun Wednesday, December 22, 2010
Quiet Sun II A calm and peaceful Sun Sunday, August 22, 2010
Quiet Sun The Sun stays unusually calm Saturday, August 21, 2010
Venus and Mercury II Tailing a "leaky" planet Tuesday, April 6, 2010
Solar Dynamics Observatory Keeping an eye on the weather Thursday, February 4, 2010

Featured Images

Artist's concept of Earth's distant future
Bright Future Wednesday, April 29, 2015
Image of a powerful solar flare on March 11, 2015
Solar Flare Thursday, March 12, 2015
Artist's concept of Solar Max in orbit
Sun Watcher Saturday, February 14, 2015
A brilliant aurora from the International Space Station
Fiery Sky Wednesday, January 21, 2015
Composite image of the Sun
Hot Sun Wednesday, December 24, 2014
Artist's concept of Solar Orbiter
Feeling the Heat Friday, July 4, 2014
Three solar flares in early June 2014
Solar Fireworks Thursday, June 12, 2014
Peek-a-Boo Friday, January 31, 2014
One of the first images from IRIS, a new Sun-watching satellite
First Sunlight Wednesday, July 31, 2013
Images of solar telescopes around the world
Fanciful Eyes Monday, June 3, 2013
Artist's concept of the Sun's structure
Powerhouse Monday, December 17, 2012
A powerful solar flare erupts on March 6, 2012
Stormy Skies Thursday, March 8, 2012
A January 23, 2012 solar flare
Restless Sun Monday, January 30, 2012
A comet plunges toward the Sun
Survivor: Comet Friday, December 16, 2011
A solar eruption on June 7, 2011
Big Splash Tuesday, June 7, 2011
The Sun as seen from space
Close to the Sun Monday, January 3, 2011
Eruption of gas from the surface of the Sun
Sun Power Wednesday, December 22, 2010
Loopy Sun Friday, April 23, 2010


©2015 The University of Texas McDonald Observatory