Sun's 2013 Solar Activity Peak Is Weakest in 100 Years

Though the sun is currently in the peak year of its 11-year solar weather cycle, our closest star has been rather quiet over all, scientists say.

This year's solar maximum is shaping up to be the weakest in 100 years and the next one could be even more quiescent, scientists said Thursday (July 11).

SUNNY TAIL: 3D quatrefoil

In the solar system is the tail of the solar wind particles, resembling the tail of a comet. To verify the existence of this tail, and determine its structure, scientists were able, after analyzing data collected over three years, the spacecraft NASA IBEX.

Moon Has Close Encounters with Planets, Star This Month: How to See It

If you only glance at the sky now and then, you may think it's pretty much the same every night. Regular sky watchers know better, and are aware of the constant changes the sky undergoes.

Take the moon, for example. Although most people know that the moon revolves around the Earth, they may never have noticed this movement with their own eyes. This week we get a chance to do exactly that.