Fill in the blanks.

(a) There are altogether ……………. constellations. Of these, 37 belong to the northern hemisphere sky and ……………. to the southern hemisphere sky.

(b) Jupiter has ……………. moons.

(c) ……………. was India's first artificial satellite.

(d) It is because of ……………, that we can forecast the weather.

(a) 88,51

there are total 88 constellations out of which 51 belongs southern hemisphere sky , constellations are group of stars that make an imaginary shape in the night sky, Example scorpius.

(b) 63

Jupiter has 63 moons, moon is a natural satellite which revolves around a planet in a fixed orbit (path).

(c) Aryabhatta

Aryabhatta was India's first artificial satellite, artificial satellite is a man made device that revolves around planet in a fixed orbit(path).

(d) Satellite

Satellite revolves above surface of earth and capture images, and other data regarding weather conditions like cloud formation at a certain place or variation in air pressure etc. and transmit this data to scientists on earth , on the basis of which they predict the weather.