Astronomy-Objective Related Question Answers
151. Period of rotation of Uranus?
10 hours 50 minutes
152. Period of revolution of Uranus?
84 years
153. Who discovered Neptune?
Johann Galle in 1846
154. First planet found by mathematical prediction rather than emperical observation?
Neptune
155. Which planet is approximately thirty times farther from the Sun than Earth is?
Neptune
156. Name of three rings of Neptune?
157. Two main satellites of Neptune?
Triton and Nereid
158. The largest satellite of Neptune?
Triton
159. Who discovered Triton?
William Lassell in 1846
160. Period of rotation of Neptune?
16 hours 6 minutes
161. Period of revolution of Neptune?
165 years
162. Which planet is known as the will-o- the wisp’ in the sky?
Neptune
163. Historically, who were the first people to record eclipse?
Chinese (4000 BC)
164. After which planet, a day of the week is named?
Saturn ( Saturday)
165. Which planet is named after the Roman God of the sea?
Neptune
166. When did scientists succeed for the first time in imaging a giant planet outside our solar system?
April 2005. Christened as 2m1207b; the planet is five times the mass of Jupiter and is orbiting a distant star.
167. What are solar flares?
168. Which part of the sun extends far into the space and hot enough to emit x-rays?
169. When do we see the corona of the Sun?
During the eclipses
170. What do we call the glowing surface of the sun?
Photosphere
171. Where does the thermo - nuclear reaction take place in the sun?
At the core of the sun
172. Which is the largest Canyon in the Solar System?
173. Which is the least dense planet?
174. First man to land on the moon?
Neil Armstrong (1969)
175. The first space craft to land on the moon?
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