Basic Astronomy

[gentel916]

lol (not to start a race war but why do people diss arabs so much ? we contributed to alot of things ,astronomy medical things and math !!!!!! the inventor of zero was an arab ) great video

[stullas]

really good explanations, thanks heaps!

[imax1971]

Cool Vid, thanks

[iris0093]

Great video, love the song, what's the name of it?

[rockn1000]

this video is just what i needed to review for my test. thanks!

[aminul56]

welcome. It served my purpose.