03-01-2018, 04:29 PM
*The planet that gives off more energy than it receives from the sun
Ans:Saturn The planet having most extensive rings in the solar system
*Saturn The planet with least density
Ans:Saturn (It’s density is less than water)
*The only planet that could float in water
Ans:Saturn
*Titan was discovered by
Ans:Christian Huygens (1655)
*The biggest satellite of Saturn
Ans:Titan
*The only satellite in the solar system with atmosphere of its own - Titan
*The second largest satellite in the solar system
Ans:Titan
*The important satellites of Saturn
Ans:Titan, promithuse, Atlas, Helan Pindora Riya, Thethis etc.
Rare Fact
*The Jewel of the . solar system
Ans:Saturn
*The satellites of Saturn are named after the Greek mythical characters.
Ans:Uranus
Uranus
*Period of Revolution-84 years
*Period of Rotation -17 hours,12 minutes
*Uranus was discovered by
Ans:William Hershel (1781)
*The major gas present in the Uranus atmosphere
Ans:Methane (Due to the presence of methane Uranus appears in green - blue colour)
*The planet known as ‘Rolling planet’ or ‘Lying planet’
Ans:Uranus
*The planet referred to as ‘ice giant’
Ans:Uranus
*The satellites of which planet is named after characters created by William Shakespeare and Alexander Pope
Ans:Uranus
*The important satellites of Uranus
Ans:Ariel, Umbriel, Titania, Oberon, Miranda
*The first planet discovered with the use of a telescope
Ans:Uranus
Neptune
*Period of Revolution -165 years
*Period of Rotation -16 hours,6 minutes
*The farthest planet from the sun
Ans:Neptune
*The coldest and slowest revolving planet
Ans:Neptune
*In Roman mythology, Neptune is the
Ans:‘God of the Sea’
*The planet that take maximum time for revolution
Ans:Neptune
*The planet which has the longest year
Ans:Neptune
*The largest satellite of Neptune that revolve around the mother planet in opposite direction
Ans : Triton
*Great dark spot is seen in
Ans : Neptune
*The planet in which wind, flows fastly
Ans : Neptune
*The three rings of Neptune are named as
Ans : Liberty, Equality and Fraternity
DWARF PLANETS
*In 2006, the International Astronomical Union (IAU) created a new classification category, for the objects in the solar system called ‘Dwarf Planets’.
*IAU recognised five dwarf planets in our solar system they are Eris, Pluto, Ceres, ‘Makemake and Haumea’
Eris
*The second largest dwarf planet - Eris (It is 70 miles wider than Pluto in solar system. It revolves around sun beyond Pluto)
*Eris was initially named as - 2003 UB 313
*Eris was discovered by - Mike Brown (2005) Pluto
Pluto
*The largest dwarf planet - Pluto (Pluto was expelled from the group of planets in the scientific meeting at Prague in Czeck Republic on 24th August 2006)
*Pluto was discovered by
Ans : Clyde Tombaugh (1930)
*The revolutionary period of pluto
Ans : 248 years
*Five known moons of pluto
Ans : Charon, Hydra, Nix, Kerberos and Styx
Ceres
*Ceres was discovered by Giuseppe Piazzi
*Only dwarf planet in the inner solar system
Ans : Ceres
*The smallest dwarf planet
Ans : Ceres
*NASA’s space craft launched in 2007 to study about ceres
Ans : Dawn
*Only dwarf planet with no moons
Ans : Ceres
Makemake
*The dwarf planet discovered in 2005.
*It is one of the largest Kuiper Belt Object. (KBO)
Haumea
*It is a dwarf planet located beyond Neptune’s orbit discovered in 2004.
*Third closest dwarf planet to the sun.
SPACE
*The first artificial satellite in the world
Ans : Sputnik I (4th October 1957)
*Sputnik I was launched by
Ans : Russia
*The first animal sent to space
Ans : The dog name ‘Leika’
*The first man in space
Ans : Yuri Gagarin (Russia)
*The spacecraft in which Yuri Gagarin travelled
Ans : Vostok - 1
*Yuri Gagarin went to space on
Ans : 12th April 1961
*The person who was known as ‘Coloumbus of the space’
Ans : Yuri Gagarin
