Our solar system is a collection of planets and other space material orbiting a star, the Sun. The Sun is the centre of the system, and planetary objects in the order Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto form its outer rim. The four inner planets, Mercury, Venus, Earth and Mars are…
The Solar System was formed 4.6 billion years ago by the gravitational collapse of an interstellar molecular cloud. It contains the Sun and its eight planets and their moons, plus a belt of icy dwarf planets and many asteroids. At the outer edge of our solar system, beyond the Kuiper belt, is the Oort cloud,…
The Sun, the eight planets and their moons, and countless asteroids, comets, and other small, icy objects comprise our Solar System. The Solar System formed 4.5 billion years ago from leftover materials from the collapse of a cloud of interstellar material. The four inner planets, Mercury, Venus, Earth and Mars, were rocky, but the outer…
Our Solar System is a collection of planets, moons and dwarf planets that orbit the Sun. The planets range in size from the rocky Earth to the gaseous Jupiter. The Solar System also contains a large number of comets, asteroids and other small objects that fall into the system from outer space. Many of these…
The Solar System is a vast collection of celestial objects that orbit the Sun in a perpetual dance. It contains a star, eight planets, and a host of other objects such as asteroids, comets, dwarf planets, and other icy bodies. All the planets and other rocky objects in the Solar System orbit the Sun in…
Galaxies are large collections of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. They range in size from dwarf galaxies with a few million stars to supergiants with one hundred trillion stars. The Solar System orbits around the Sun in our Milky Way galaxy. It contains planets, moons, and asteroids….
A comet is a small icy celestial body that orbits around the sun. It has a nucleus (solid, frozen ice), a gaseous coma (water vapor, CO2 and other gases) and a long tail. The International Astronomical Union (IAU) defines a planet as a Sun-orbiting astronomical body that has undergone the rounding process to achieve hydrostatic…
