81 Pisciculture is the artificial breeding of

Fish

82 Apiculture is the science of breeding

Honeybees and honey production

83 The estimated average age of the universe starting from the big-bang is about

15 billion years

84 The average distance between Earth and Sun is equal to

Astronomical Unit

85 An Astronomical Unit (AU) is equal to

92,975,680 miles

86 Astronomical Scientists withdraw the planet status of Pluto on

24 August 2006

87 The Apollo Eleven Mission (Manned Mission To Moon) was launched on

16 July 1969

88 The Lunar Module of the Apollo Eleven Mission landed on the surface of the Moon on

20^th July 1969

89 In the Solar System, which planet has the largest number of satellites?

Saturn

90 The number of satellites of the Saturn is

23