Astronomers have spotted the farthest spiral galaxy ever seen. Its light has travelled 12.8 billion years to reach Earth.

Experts have pieced it together. How were China's legions of terra-cotta warriors made? Experts have pieced it together. How ancient astronomy mixed science with mythology How ancient astronomy ...

It is a special topic site museum of nature science displaying Chinese ancient astronomical equipment and astronomy. Now, it has been reformed to Beijing Ancient Astronomical Equipment Exhibition ...