JUPITER

  ·         Jupiter is the largest planet of the solar system.

·         Jupiter is also known as winter planet as its average temperature is very low ((-148˚ C).

·         Ganymede, satellite of Jupiter is the largest satellite in the solar system.

SATURN

·         Saturn is the second largest planet in the solar system.

·         Saturn has bright concentric rings which are made up of ice and ice covered dust particles which revolve around it.

·         Titan is the largest satellite o Saturn.

URANUS:

·         Uranus is about four times the size of the earth. This planet appears greenish in color because of methane gas percent in its atmosphere.

·         Uranus was discovered in1781. By sir William Hershel.

·         Uranus is the 7^th planet from the sun.

·         Uranus is the first planet to have been discovered by the use of a telescope. Uranus is the third biggest planet of the solar system.

·         Uranus is extremely cold having, surface temperature- 190˚C and is surrounded by 13 rings namely zeta (ʕ) / R 1986U2, 6, 5 4, alpha (α) , beta (β), eta (ε), gamma (γ), delta(  ) , lambda (λ), epsilon (ε), nu (v) and mu ( ).

·         Uranus rotates from east to west on its axis, which is opposite to other planets except Venus.

·         The axis of Uranus has large inclination so that it a appears to be lying down, hence it bears the name” a planet on its side”.

NEPTUNE

·         Neptune is the8th planet of the solar system.

·         The temperature on the surface of Neptune remains low.

·         Neptune is very similar to Uranus and can be considered as its swim Neptune is surrounded by methane rings of subzero temperature.

PLUTO IS NOT A PLANET NOW

·         On the basis of the new definition of planet given by the IAU (international astronomical union),, the word’s topinstitutionon space science research, leading astronomers participating in IAU’s meet at Prague (czechrepublic) on August 24, 2006, declared that Pluto would no longer remain a planet.

·         Under the IAU

·         S new guidelines, the number of planets unit the solar system has thus been reduced from nine to eight. Its merits mentioning here that, prior to this decision, plot had been holding the planetary status since its discovery in 1930 by Clyde Tombaugh.

·         Now, with the omission of Pluto from the solar system, its membership has been restricted to the eight “classical” planets, namely mercury Venus, earth, and mars, Jupiter, Saturn, Uranus and Neptune