O movimento dos corpos celestes

Observações a partir da Terra 

http://astronomyonline.org/SolarSystem/SunspotRotation.asp

http://astrowhw.blogspot.com/2017/07/solar-rotation-active-region-2665.html

http://www.astrobin.com/193626/?nc=user

http://www.astrobin.com/216361/?nc=user

http://www.astrobin.com/189991/?nc=user

http://www.astrobin.com/full/398476/0/?nc=user

http://www.astrobin.com/397293/?nc=user

http://www.astrobin.com/394910/?nc=user

http://www.astrobin.com/392132/?nc=user

https://www.youtube.com/channel/UCQLWtcSOQZfnP6d9f1POD3g/videos

http://astrowhw.blogspot.com/2017/07/big-prominence-this-weekend.html