Based on the experience and limitations of these and other surveys, the Chinese astronomical community agreed to invest ... The field of view of each telescope is 5 \(\times\) 5 square deg. Each field ...

National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, China Key Laboratory for Radio Astronomy, Chinese Academy of Sciences, Nanjing ...

There's no shortage of round celestial objects in our universe. Planets, moons and stars all exhibit lovely spherical shapes. But astronomers recently spotted a mysteriously circular orb deep in the ...

Convex mirrors reflect images that are smaller than life size. In the ray diagram shown below (click to enlarge), notice the reflection of two rays of light from a particular point at the tip of the ...

On May 26, 1983, the European Space Agency launched its first X-ray Observatory into space. The spacecraft was called EXOSAT, which stands for European X-ray Observatory SATellite. The mission was ...

Today, the European Space Agency's gamma-ray telescope ends its observations. During its 22 years in space, Integral has reshaped our view of the most dramatic events in the universe.