Comments on: The birth of a sunspot cluster

By: Lastest X-class Solar Flare News | Heliobiology Predicts Effects Of Sunspot Cycles On Humans, History and Weather

Fri, 22 Apr 2011 00:42:44 +0000

[...] The birth of a sunspot cluster | Bad Astronomy Ever wanted to see how sunspots form and change as they grow? The folks working with NASA’s SDO satellite just released this amazing video of the adorable younglings. Not much happens until about 18 seconds in, and then a lot happens. That is so freaking cool. Taken over the course of two weeks (half a rotation of the Sun), you can see them pop up, darken, and grow, and even rotate a bit as the … Read more on Discover [...]

By: Acné solaire : la naissance d’une tâche solaire. (vidéo) | GuruMeditation

Wed, 20 Apr 2011 15:52:59 +0000

[...] Source /* [...]

By: tracey

tracey — Wed, 20 Apr 2011 12:41:20 +0000

this is a great video it makes me think about things i have never thought about before! i don’t know a lot about sun spots but i would like to learn more.

By: Und was passiert eigentlich auf der Sonne, der “gelben Sau”?

Und was passiert eigentlich auf der Sonne, der “gelben Sau”? — Wed, 20 Apr 2011 08:06:30 +0000

[...] Video, gefunden bei Bad Astronomy, der dazu schreibt “That is so freaking cool”, woran (übrigens ein stark [...]

By: csrster

csrster — Wed, 20 Apr 2011 06:47:14 +0000

I have a PhD in sunspots, but I never realised until I saw this video how important vorticity is in their growth and formation. Look at 23s and again at 37s.

By: Messier Tidy Upper

Messier Tidy Upper — Wed, 20 Apr 2011 04:10:36 +0000

@1. Dave Brooks : That’s exactly what happened on my face every day when I was a teenager …

Your *face* had tangled magnetric fields larger than the Earth and cooled from 6,000 degrees to to just 3,000 degrees?!

By: Messier Tidy Upper

Messier Tidy Upper — Wed, 20 Apr 2011 04:10:18 +0000

Ever wanted to see how sunspots form and change as they grow?

Not with my unaided eyes!

But, yes, great video.

By: Video: SDO Captures a Sunspot Cluster Swimming Around On The Sun’s Surface

Video: SDO Captures a Sunspot Cluster Swimming Around On The Sun’s Surface — Wed, 20 Apr 2011 03:22:37 +0000

[...] aren’t static, and NASA has the amazing video footage to prove it. Captured in February, this clip taken by NASA’s Solar Dynamics Observatory shows how [...]

By: World’s Strangest | Birth of a Sunspot Cluster

World’s Strangest | Birth of a Sunspot Cluster — Tue, 19 Apr 2011 21:38:01 +0000

[...] Now I’m excited, too! Watch the video at Bad Astronomy. Link [...]

By: Steve D

Steve D — Tue, 19 Apr 2011 20:16:35 +0000

Two other really cool features. First the bright filaments or faculae. These are more numerous when there are sunspots, enough to offset the reduced light from sunspots, so a sunspot-maximum sun is actually brighter by a tiny amount. Second, as the group rotates out of view the sunken nature of the sunspots becomes readily apparent.

By: panini

panini — Tue, 19 Apr 2011 19:08:13 +0000

The most amazingest video I’ve seen in a while!

By: Cindy

Cindy — Tue, 19 Apr 2011 19:04:07 +0000

Perfect timing. I showed this to my Astronomy class right before doing a lab using SDO data to determine the rotation period of the Sun.

Unfortunately we have too much low altitude water vapor to see the Sun today and show them sunspots (have a solar filter).

By: Video: SDO Captures a Sunspot Cluster Swimming Around On The Sun’s Surface | Mutual Cognizance

Tue, 19 Apr 2011 16:11:02 +0000

[...] aren’t static, and NASA has the amazing video footage to prove it. Captured in February, this clip taken by NASA’s Solar Dynamics Observatory shows how [...]

By: Endyo

Endyo — Tue, 19 Apr 2011 16:05:46 +0000

Well that’s one thing I have never seen… and it looked pretty amazing. I didn’t know that sunspots were so dynamic over such a short period of time. Do all of these result in CMEs or do some just make loops that can settle back into the sun? Does that correspond to the size of the spot?

By: Jeff

Jeff — Tue, 19 Apr 2011 15:50:43 +0000

#3: I just did it an hour ago with a class of 17-20 year olds and they comprehended it very well. They really enjoyed it and it was a successful experiment. Right now there is an excellent sunspot group visible.

By: Cool, de geboorte van een zonnevlek in beeld gebracht | Astroblogs

Cool, de geboorte van een zonnevlek in beeld gebracht | Astroblogs — Tue, 19 Apr 2011 15:37:58 +0000

[...] en de grijzere buitenrand, de penumbra. Beiden zie je mooi in beeld in de video. :bron: Bron: Bad Astronomy. Deel deze blog:EmailPrintFacebookShareStumbleUponRedditDigg Gerelateerde Astroblog:Een weergaloze [...]

By: Larian LeQuella

Larian LeQuella — Tue, 19 Apr 2011 15:03:46 +0000

Jeff,

That is a very cool observational experiment! I think I will do that with my daughter and kids in the neighborhood!

By: Jeff

Jeff — Tue, 19 Apr 2011 13:28:37 +0000

yes it is cool.

I’ve showed classes for 30 years a very simple little experiment to show sunspots, and I’ve probably lived through 3 sunspot cycles as a prof. Just use a small telescope or binocs and then PROJECT the solar disk onto a piece of paper, and the sunspots are so very obvious. Measure the diameter of the solar disk image and the size of sunspots on the paper. To get the true size of sunspots, just multiple the ratio of above numbers times real solar diameter 1,500,000 km. I typical get 2 mm for sunspot image and 200 mm for solar disk image and ratio of 2/200 = 0.01 and times 1,500,000 km gives 15,000 km and what is neat is I point out this is bigger than earth’s diameter 12,000 km.

By: Dave Brooks

Dave Brooks — Tue, 19 Apr 2011 13:05:12 +0000

That’s exactly what happened on my face every day when I was a teenager …