How telescopes work. Learn planets. Why questions and science for kids. How things work
30/09/20
Nguồn: https://www.youtube.com/watch?v=jAFrlzOtz-Y&ab_channel=MizyakaDizyakaENG
Nguồn: https://www.youtube.com/watch?v=jAFrlzOtz-Y&ab_channel=MizyakaDizyakaENG
