The planets formed out of the solar nebular there is no concept of the "first" they all formed slowly at the same time.
The first five planets in the order from closest to farthest are Mercury, Venus, Earth, Mars, and Jupiter. The first four planets are inner planets, and Jupiter is an outer planet.
The first four planets closest to the Sun are the four terrestial planets.
The voyager 1 and 2 first saw the outer planets.
Yes, the first four planets in our solar system are rocky planets. They are Mercury, Venus, Earth, and Mars. These planets have solid surfaces made mostly of rock and metal.
Well First of all *Are there ten planets*No there are not 10 planets, only 8 actually.
Mercury, Venus, Earth and Mars are known as "inner planets" or "terrestrial planets".
The first four planets from sun Mercury, Venus, Earth and Mars are rocky planets other planets in solar system are gaseous or dusty planets.
terrestrial
The inner planets are Mercury, Venus, Earth, and Mars. They are "inner" because the are the first 4 planets from the Sun.
Galleilaeo
by a plane first
Jupiter and Saturn are the largest planets in our solar system.