41.
The light coming from stars gives the idea of their ________

42.
Stars which appear single to the naked eye but are double stars when observed by a telescope, are known as ________

43.
Asteroids have their orbits between the planets ________

44.
Which one of the following statements is correct with reference to our solar system?

45.
The correct sequence of the following planets in terms of gravity, in the descending order is ________

46.
Consider the following astral bodies:
1. Sirius
2. Venus
3. Mars
The correct sequence in decreasing order of their brightness is:

47.
Which planet is considered as the Dwarf planet?

48.
Which of the following is the largest of the inner planets?

49.
Which of the following scientist had proven that every planet has an elongated path?

50.
The orbit in which of the following planet is nearest to the Sun?

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