Today in Space


I haven’t done a space report for a while. Today we dodged a big one. A massive eruption on the far side of the sun could have had some interesting consequences had it been directed at earth.

The solar wind is steady at 396 Km/sec. A mind boggling speed when you stop to think about it, yet just an average day on the sun.

Of the current 1353 Potentially Hazardous Asteroids (PHA) – any object 100 Lunar Distance (LD) or less from earth, (LD is the distance from earth to the moon), the closest one for the remainder of 2012 passes by tomorrow. Named 2012VS76 it will come within 2.4 LD and measures 18m across. The largest is 4179 Toutatis, on Dec. 12 it will pass 18 LD. for which we can all be thankful as Toutatis is nearly 3 Km. wide.

Sunspots AR1610 and 1614 are getting restless, NASA predicts only a 25% chance of an M class eruption and 5% for an X. There has been some impressive geomagnetic activity lately. Geomagnetic storms occur in the upper atmosphere when magnetic energy from the sun, propelled by solar wind or energy from coronal holes messes with our magnetosphere. A recent magnetic storm resulted in rare red auroras. We can expect spectacular auroras for the next few days.

http://spaceweather.com

First photo – NASA – recent magnetic eruption. Followed by a picture of red auroras taken by David E. Carter near Whitehorse, NWT