31. The space observatory used the telescopes to observe and measure ultraviolet radiation from celestial objects . 32. Collectively, amateur astronomers observe a variety of celestial objects and phenomena sometimes with artificial skyglow. 33. This is also the case with other celestial objects . 34. This year there were two movies about a collision between Earth and a celestial object . 35. But the destroyed instrument would have enabled astronomers to view cooler celestial objects such as planets. 36. The science of actually measuring positions of celestial objects in the sky is known as astrometry. 37. However, for objects in space, the celestial objects . 38. Increasingly, unusual events are interpreted as being impacts of celestial objects even when they are not. 39. By harnessing the gravitational energy of other celestial objects , the spacecraft can pick up kinetic energy. 40. It contains an estimated 500 million celestial objects , mostly stars but also galaxies, asteroids and comets.
