Because you live on earth.
Terrestrial planets are closer to the sun than gas giants, which means they have shorter orbital periods. This leads to terrestrial planets moving more rapidly in their orbits compared to gas giants. It is a result of the gravitational pull from the sun being stronger on planets closer to it, causing them to move faster.
The four outer planets are gas giants - they are much larger than the four inner planets, and they consist mainly of gas - they don't have a surface on which you can stand.
Yes, Uranus is the closest planet to Neptune.
Gas giants are much bigger, are more distant from the sun, and are composed mostly of gas (particularly methane and ammonia) whereas the terrestrial planets are composed mostly of rock and metal, are closer to the sun, and are smaller.
A gas giant is similar in composition to the Sun. The Sun is much bigger than the gas giants and it is a star not a planet, of course.
The inner planets are the four planets nearest to the sun. They are Mercury, Venus, Earth and Mars. They all have rocky surfaces, they all orbit the sun much quicker than the outer gas giants. They are all warmer than the outer gas giants. They are all between the asteroid belt and the sun.
Gas giants didn't form closer to the Sun due to the high temperatures in the inner solar system, which caused lighter gases like hydrogen and helium to remain in a gaseous state rather than condensing into solid cores. In contrast, the colder outer regions allowed these materials to accumulate and form the massive cores necessary for gas giants to attract and retain thick atmospheres. Additionally, the solar wind from the young Sun likely cleared out lighter elements from the inner solar system, further preventing gas giant formation nearby.
The closer a planet is to the sun, the faster it revolves around the sun, so Mercury and Venus take less time to go around the sun than Earth, and Mars and the gas giants take longer.
The Sun has a composition similar to that of Gas giantsThe sun has a similar composition to the gas giants
The Sun has a composition similar to that of Gas giantsThe sun has a similar composition to the gas giants
The Sun has a composition similar to that of Gas giantsThe sun has a similar composition to the gas giants
Because they are further from the sun.