Question

C.
Fill in the blanks :
neighbours.
1. Earth has many
2.
The Earth completes one rotation in
3. The
is our closest neighbour in space.
4.
are huge ball of fiery gases which produce their
own heat and light.
is called 'Red Planet.
5.
28
8
Vladih
266​

Answer 1

Answer:

1. When did we discover Saturn?

We don’t know exactly when ancient observers

first recognized what we now call the planet

Saturn. Many ancient civilizations were aware

of five wandering points of light in the night

sky, which were later named for gods of Roman

mythology — Mercury, Venus, Mars, Jupiter,

and Saturn. These planets were easily observed

with the unaided eye. It was not until the time

of Galileo, who first looked at the sky through a

telescope, that we observed these wandering

“stars” to be other worlds.

The planets outside Saturn’s orbit — Uranus,

Neptune, and Pluto — were discovered using

more modern telescopes, beginning with the discovery of Uranus by William Herschel in 1781.

The discovery of each of these outermost planets generated great public interest at the

Explanation: