Introduce websites that study astronomy.

1. Sky Astronomical Network: www.cosmoscape.com

2. Astronomy, astronomy knowledge base-astronomy you want to know, the latest astronomical observation manual, watching the universe through Hubble, the universe through Hubble, endless starry sky.

Observing the universe and the oceans of stars through Hubble

3. Monthly magazine: astronomy enthusiasts

4. observation software: Stellarium 0. 10.5 (virtual planetarium)