2007-03-28 03:12:39 · 4 answers · asked by aymology 2 in Science & Mathematics ➔ Astronomy & Space
The types of planets in our solar system are divided into two categories: gas giants (Saturn, Jupiter, Neptune and Uranus) and terrestrial planets (Mercury, Venus, Earth and Mars). The gas that makes up the gas giants (mostly helium and hydrogen) is incredibly dense and opaque. They reflect visible light but also emit infrared and X-rays. In terms of visibility, think of water steam or smoke...they are gases, but the particles in them make them visible, especially when light is shining through them.
2007-03-28 03:26:17 · answer #1 · answered by Stacey P 1 · 0⤊ 0⤋
Everything from Mercury to Mars is rocky and The remaining four from Jupiter out are gaseous. The gas giants are visible because the gas is not transparent like air. It's opaque and reflects light.
2007-03-28 03:17:56 · answer #2 · answered by Gene 7 · 0⤊ 0⤋
Solid:
Mercury
Venus
Earth
Mars
(Pluto)
Gas:
Jupiter
Saturn
Uranus
Neptune
The Gas planets are visible because there is so much gas, and it is made up of different types of gas that have color to them.
2007-03-28 04:53:22 · answer #3 · answered by xooxcable 5 · 0⤊ 0⤋
mercury, venus, earth and mars are solid. jupiter, saturn, uranus and neptune are made of gas. 4 planets are visible to the naked eye, venus, mars, jupiter and saturn.
2007-03-28 03:21:14 · answer #4 · answered by neutron 3 · 0⤊ 0⤋