Question

1. Define-Comets, Asteroids, Meteoroids, star , planet​

Answer 1

Answer:

comet: a celestial object consisting of a nucleus of ice and dust and, when near the sun, a ‘tail’ of gas and dust particles pointing away from the sun

asteroid : a small rocky body orbiting the sun. Large numbers of these, ranging enormously in size, are found between the orbits of Mars and Jupiter, though some have more eccentric orbits.

meteoroids: a small body moving in the solar system that would become a meteor if it entered the earth's atmosphere

star: a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.

planet : a celestial body moving in an elliptical orbit round a star.

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Answer 2

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stars:- stars are heavenly bodies made up of hot burning gases, thus shining by their own light. 2. Planet :- planets are aa opaque bodies, which continuously revolved around and are lighted by the sun. there are eight planets in the solar system. the sequence of planets according to their size ( in descending order) is Jupiter, Saturn, Uranus, Neptune Earth, Venus, Mars and mercury. Pluto is not a planet now. Pluto was discovered by clyde tombaugh in 1930. degree definition of planet by the international astronomical unit (IAU) on 24th August, 2006 states that, in the solar system, a planet is a celestial body that it is in orbit around the sun, it has sufficient mass so that it assumes a hydrostatic equilibrium shape, it has cleared the neighborhood around its orbit, unknown satellite body full feeling the first to rule is classified as a DWARF PLANET .SO, PLUTO IS CONSIDERED AS DWARF PLANET. Comets :- comets are called long haired stars. They revolve around the sun in elliptical orbits. When they come near the sun, they begin to glow and develop tails. ASTEROIDS:- ASTEROIDS ARE FOUND BETWEEN TWO ORBITS OF MARS AND JUPITER. THE LARGEST ASTEROID IS CERES .METOROIDS:- ARE POPULARLY FROM KNOWN AS SHOOTING STARS ARE MISSILES FROM THE SPACE. THESE ARE ROCKS, WHAT ARE SMALL PARTICLES OF DUST THAT FALL FROM SPACE AND BURN IN THE ATMOSPHERE DUE TO FRICTION WITH YEAR