Researchers calculate size of particles in Martian clouds of CO2 snow

Mars’ carbon dioxide ‘snowflakes’ are about the size of red blood cells. In the dead of a Martian winter, clouds of snow blanket the Red Planet’s poles — but unlike our…

Big CME headed toward Earth

From Spaceweather.com : Active sunspot 1401 erupted yesterday, Jan. 19th around 16:30 UT, producing an M3-class solar flare and a full-halo coronal mass ejection (CME). The Solar and Heliospheric Observatory…