Tonight's Sky
Sun
Sun
Moon
Moon
Mercury
Mercury
Venus
Venus
Mars
Mars
Jupiter
Jupiter
Saturn
Saturn

Tonight's Sky — Change location

OR

Searching...

Tonight's Sky — Select location

Tonight's Sky — Enter coordinates

° '
° '

See the Sun in high-def

Now that you've read about our star's composition, watch its roiling surface in action from the comfort of your own computer.

December 2010 WE Sun
NASA
SDO watched as an active region in the Sun's southern hemisphere produced a whole series of looping arcs of plasma in profile.

When NASA launched the Solar Dynamics Observatory (SDO) February 11, 2010, it made possible some of the best-ever solar observations. This 19-second video shows a series of looping arcs of plasma in an active region of the Sun's southern hemisphere, from September 11 to 13, 2010.

Already a subscriber? Register now!

Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below.
ADVERTISEMENT

FREE EMAIL NEWSLETTER

Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter.

ADVERTISEMENT
ADVERTISEMENT
BoxProductcovernov

Click here to receive a FREE e-Guide exclusively from Astronomy magazine.

Find us on Facebook

Loading...