What Is A Comet?

توضیحات:

Science expert Emerald Robinson explains what a comet is.To view over 15,000 other how-to, DIY, and advice videos on any topic, visit http://www.monkeysee.com/

لغات کلیدی:

comet, star, planet, solar system, space, meteorite, asteroid

درباره ما | تماس با ما | قوانین تخته سفید