Ordinary matter such as atoms make up only about 15% of all the matter in the universe. The other 85% is “dark matter”...
Astronomers believe that they have seen the shadows of a giant ring system around an unseen planet move in front of...
Of all the questions that science might hope to answer, few excite people more than "is there life on worlds other than...
Radio astronomy began in 1933 when an engineer named Karl Jansky accidentally discovered that radio waves come not just...
Where do stars come from? Human beings have thought about this question for thousands of years and have proposed many...
