25.04.10-First Extra-solar Magnetic Loop Recorded.

 
Artist’s conception of the radio flare superimposed over the Algol system.
   Radio-Interferometry has really shown its stuff as of late. Recently, astronomers have used a collaboration of radio telescopes based planet-wide to study a familiar variable star; Algol in the constellation Perseus. Known since Arabic times as “The Demon Star,” Algol is an eclipsing binary, [...]

AstroEvent of the Week: 27.04.09: Epsilon Aurigae.

Epsilon Aurigae. (Credit: Stellarium).
The American Association of Variable Star Observers wants you to help gather data on a very enigmatic astronomical object; the variable star Epsilon Aurigae. This seemingly ordinary star varies in a very peculiar way. The primary is a type F0 super-giant star, and what is known is that every 27.06 years [...]