The hunt for aliens is on! After a distinguished career in cosmology Professor Martin Rees, the astr[展开全部]
The hunt for aliens is on! After a distinguished career in cosmology Professor Martin Rees, the astronomer royal, has taken up the search for extra-terrestrials. Looking for aliens is no longer science fiction - it is a question that's engaging some of the greatest minds in science.
As our knowledge of the universe has increased, we're getting closer to answers. Many scientists...[收起部分]
