Wed, May 16, 2012
Video > SINA Podcast Collection

Why the solar system can exist

2012-05-16 08:17:20 GMT2012-05-16 16:17:20(Beijing Time)  SINA.com

If gravity is so attractive, why doesn't the earth just crash into the sun? Or the moon into the earth?

| PRINT | RSS

Add Your Comments:

Your Name:
Your Country:
Comment:
(English Only)
 
Please read our Terms of Service. Messages that harass, abuse or threaten others; have obscene or otherwise objectionable content; have spam, commercial or advertising content or links may be removed.

You might also be interested in:

china

94 houses damaged in S. China's cave-in

china

Lujiazui finance and trade zone in Shanghai

china

Yunyang Hanjiang River Bridge opens in Hubei

SPECIAL COVERAGE

Beijing Welcomes You--Decent Foreigners

Severe weather hits China

MOST VIEWED

LATEST VIDEO

Facebook's goal: Global domination

Facebook's goal: Global domination

Vanishing coin trick

Vanishing coin trick

PICTURE GALLERY

Lujiazui finance and trade zone in Shanghai