Latar Belakang on/off
Kroasia

Subscriber

29

Universe

30 • Hari ke 2,894, 10:27 • Diterbitkan di Croatia Croatia • Interaksi sosial dan hiburan Interaksi sosial dan hiburan

Facts about universe survey

Answer on each with yes or no in comment area, and test your knowledge.

1.Is the sun the most perfectly round natural object known in the universe?

2.The Sun travels around the galaxy once every 100 … lebih lanjut »