Definition: sun spot: An area seen as a dark spot on the photosphere of the Sun; sunspots are concentrations of magnetic flux, typically occurring in bipolar clusters or groups; they appear dark because they are cooler than the surrounding photosphere.
sun spot
From Nick Greene, former About.com Guide
Free Email Courses
Related Articles
- high sun - Space and Astronomy Definition - Online Dictionary and Glossary ...
- organic compounds - Space and Astronomy Definition - Online Dictionary and ...
- ice-volcanic melt - Space and Astronomy Definition - Online Dictionary and ...
- ice volcanism - Space and Astronomy Definition - Online Dictionary and Glos...
- impact crater - Space and Astronomy Definition - Online Dictionary and Glos...
Explore Space / Astronomy
- About.com
- Education
- Space / Astronomy
- Astronomy and Space Basics
- Glossaries
- Astronomy Dictionary
- sun spot - Space and Astronomy Definition - Online Dictionary and Glossary Definition of sun spot
©2012 About.com. All rights reserved.
A part of The New York Times Company.