61. Why do sunspots look darker than the rest of the Sun's photosphere?
No light emitted
It is cooler than its surrounding
Deep hole on that area
Light do not escape in sun spot
62. Why was Hubble Space Telescope placed in space?
To get closer
To get good magnification
To avoid light pollution
To increase the field of view
63. What is an Aperture of the main lenses of the telescope?
Distance of lenses
Diameter of lenses
Curvature of lenses
Power of lenses
64. Which solar eclipse will be the longest in 12000 years?
February 27, 2036
October 14, 2023
July 16, 2186
March 21, 2099
65. The largest ring of the Saturn is:
66. Meteors are also called as:
67. Which is the center of the Galactic coordinate system?
68 What is the average temperature on Mars?
69. A Galactic year is:
175 to 200 million years
100 to 125 million years
225 to 250 million years
400 to 450 million years
70. Which is the study of origin, evolution, and eventual fate of the universe?