What is a solar system?
Solar system is the smallest of the three systems. A solar system consists of the abject affected by its gravity, these subjects include planets, moons, asteroids, comets and meteoroids. The galaxy that contains the Earth and its solar system is called the Milky Way.
What is a star?
A nebula is a giant cloud of dust and gas in space, it make star The gravity in the nebula slowly begins to pull the gas and the dust together, As these clumps get bigger and bigger, their gravity gets stronger and stronger. The collapse causes the material at the centre of the cloud to heat up and this hot core is the beginning of a star.
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