The Earth is thought to have been formed about 4.6 billion years ago by collisions in the giant disc-shaped cloud of material that also formed the Sun. Gravity slowly gathered this gas and dust together into clumps that became asteroids and small early planets called planetesimals.May 9, 2015
A good rhyme to help you remember is; My Very Enthusiastic Mother Just Served Us Noodles! There is another Planet song that goes; "Mercury and Venus, Earth and Mars. Look at all the planets in amongst the stars. Jupiter and Saturn, Uranus too.
The inner solar system contains Mercury, Venus, Earth and Mars. These four planets are closest to the Sun. The outer solar system contains Jupiter, Saturn, Uranus, Neptune and Pluto. The inner planets are separated from the outer planets by the Asteroid Belt.
With at least 200 billion galaxies out there (and possibly even more), we're very likely talking about a Universe filled with around 1024 planets, or, for those of you who like it written out, around 1,000,000,000,000,000,000,000,000 planets in our observable Universe.Jan 5, 2013
Our solar system is made up of a star that we call the Sun , along with eight or nine planets (more on that later): Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and the most controversial: Pluto. The solar system also includes the satellites of these planets, numerous comets, asteroids, and meteoroids.
The five brightest planets - Mercury, Venus, Mars, Jupiter and Saturn - have been known since ancient times and can easily be seen with the naked eye if one knows when and where to look. They are visible for much of the year, except for short periods of time when they are too close to the Sun to observe.