European scientists sent a space probe Giotto to meet Comet Halley in…….
a) 1980-81
b) 1983-84
c) 1985-86
d) 1987-88
These move around the Sun in an elliptical path.
a) asteroids
b) comets
c) meteors
d) satellites
Its head is made of ice, particles of rocks and gases.
a) asteroids
b) comets
c) meteors
d) satellites
A large, fuzzy, circular cloud around the head of comet is called the……….
a) tail
b) head
c) coma
d) none of these
