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Space Science
Play this  Quiz Game  On your phone 141 - Mariner 9, 142 - 0.6 g/cm3, 143 - Gravitational collapse, 144 - Perihelion, 145 - Jupiter, 146 - X-ray telescope,   147 - Protostar, 148 - Carbon - Nitrogen - Oxygen Cycle, 149 - Hipparchus, 150 - 2.4 billion km.

141. What was the first spacecraft to orbit another planet?

           Mars 3

           Mariner 9

           Viking 1

           Mars 2


142. The average density of comets known is:

           0.6 g/cm3

           2.8 g/cm3

           0.3 g/cm3

           1.2 g/cm3


143. What is the source of energy in a supernova explosion?

           Nuclear reaction

           Chemical reaction

           Gravitational collapse

           Unknown


144. Which is the nearest point to the Sun in the orbit of a planet / space object?

           Apastron

           Periastron

           Aphelion

           Perihelion


145. Recognize the image.

           Venus

           Jupiter

           Mars

           Saturn


146. ROSAT was a:

           Ultraviolet telescope

           Infrared telescope

           X-ray telescope

           Radio telescope


147. A star that forms by contraction of the gas from a giant molecular cloud is called:

           Dark nebula

           Protostar

           T Tauri star

           Bok globule


148. By which fusion reaction, the stars convert hydrogen to helium?

           Carbon - Nitrogen - Oxygen Cycle

           Proton-proton chain

           Carbon - Nitrogen - Nitrogen Cycle

           Deuterium - tritium


149. Who was the first man to classify stars according to their brightness?

           Tycho Brahe

           Nicolaus Copernicus

           Hipparchus

           Galileo Galilei


150. What is the diameter of the star UY Scuti?

           2.4 billion km

           1.1 billion km

           3.2 billion km

           1.9 billion km