[TheForge] OT sunspots

Fri Nov 14 16:31:01 2003

Probably so, simply because glass absorbs most of the UV.

However, focusing the sunlight through a pin hole onto a white sheet is
a safer way to go.

Bruce
NJ

>>> [email protected] 11/14/2003 4:20:11 PM >>>

Is it safe to look at the sun with a welding hood #10 shade?

Bob
____

Space Weather News for Nov. 14, 2003
http://spaceweather.com

Using a technique called helioseismic holography, astronomers can do
something amazing: look through the sun to find sunspots on the far
side
of our star. On Nov. 11th and 12th their holographic maps revealed
giant
sunspots 486 and 488--the same active regions that caused so much 
intense
space weather a few weeks ago.

These spots are still active. Explosions from their vicinity have been
hurling clouds of gas over the sun's limb in recent days. The sun's 
27-day
rotation will soon carry the pair around to the Earth-facing side of
the
sun. More solar storms are possible when they reappear on or about
Nov.
19th.

Meanwhile, another one of last month's giant sunspots has already
reappeared. Active region 484 is peeking over the sun's eastern limb. 
The
sunspot looks smaller than it did in late October, but it too remains
active--hurling a bright coronal mass ejection into space on Nov.
13th.

Visit spaceweather.com for more information and updates.

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