A little history of sun-watching and science from our friends at the Solar Dynamics Observatory.
Source: Universe Today
This blog is intended for students who want to participate in astronomy competitions and olympiads (OSN, IAO, IOAA, APAO). Tutors and teachers can use this blog as a teaching resource. Amateur astronomers can find this blog useful,too. Its content varies from problem-set, course slide, try out, news, textbook recommendation, astronomy software review, trivia, video, and many more.