- Gerak Sejati (Proper Motion)
- Gerak Matahari
- Paralaks Rata-Rata dan Paralaks Gugus
Selamat belajar. (sumber soal : Dr. Djoni N. Dawanas)
Latihan Astrofisika Bab VI
(Untuk soal-soal dari bab-bab sebelumnya)
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.