سلام کسی سامری درس ۲ را بلده؟ معرکه میدم

alireza went to an observatory. he interested in planets. but he did not know much about them. ms.tabesh who works in the observatory gave some information about them to him: like:some of them are rocky, some have rings and some have moons , the largest of them is Jupiter that it has more than 60 moons.