Solar System

As part of our SciPad topic, Astronomy, we were tasked with building a model solar system, containing the eight planets of the solar system:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

This is our solar system. Unfortunately, due to circumstances outside of our control, two planets are missing. Mars & Uranus were taken from our box and replaced with two other, much smaller planets, which were unusable.

Mercury:
Mercury is 57.91 million kilometres away from the sun, and has a surface temperature of 427C°
It has no moons, and its atmosphere is comprised of hydrogen, oxygen, and helium.
The length of a day on Mercury is 58 days, 15 hours, and 30 minutes.
The length of a year on Mercury is 88 Earth days.
Your weight on Mercury would be 38% of your weight on Earth.

Venus:
Venus is 108.2 million kilometres away from the sun, and has a surface temperature of 462C°
It has no moons, and its atmosphere is comprised of carbon dioxide.
The length of a day on Venus is 116 days, and 18 hours.
The length of a year on Venus is 225 Earth days.
Venus, while farther from the sun than Mercury, has a higher surface temperature.

Earth:
Earth is 149.6 million kilometres away from the sun, and has a constantly rising surface temperature.
It has one moon, and its atmosphere is comprised of nitrogen and oxygen.
The length of a day on Earth is 23.934 hours.
The length of a year on Earth is 365.25 Earth days.
Earth is the only planet that supports life in our solar system.

Mars:
Mars is 227.9 million kilometres away from the sun, and has a surface temperature of -63C°
It has two moons, and its atmosphere is comprised mostly of carbon dixiode and nitrogen.
The length of a day on Mars is 1 day, and 37 minutes.
The length of a year on Mars is 687 Earth days.
Mars's atmosphere is 95% thinner than Earth's.

Jupiter:
Jupiter is 778.5 million kilometres away from the sun, and has a surface temperature of -112C°
It has 79 moons, and its atmosphere is comprised mostly of hydrogen.
The length of a day on Jupiter is 9 hours, 56 minutes.
The length of a year on Jupiter is 12 Earth years.
Jupiter is the largest planet in our solar system.

Saturn:
Saturn is 1.434 billion kilometres away from the sun, and has a surface temperature of -185C°
It has 62 moons, and its atmosphere is comprised mostly of hydrogen.
The length of a day on Saturn is 10 hours.
The length of a year on Saturn is 29 Earth years.
Saturn has a large ring around it's surface.

Uranus:
Uranus is 2.871 billion kilometres away from the sun, and has a surface temperature of -224C°
It has 27 moons, and its atmosphere is comprised mostly of hydrogen and helium.
The length of a day on Uranus is 17 hours.
The length of a year on Uranus is 84 Earth years.
Uranus is a giant ice ball, having the coldest temperatures of any planet in our solar system.

Neptune:
Neptune is 4.495 billion kilometres away from the sun, and has a surface temperature of -200C°
It has 14 moons, and its atmosphere is comprised mostly of hydrogen and helium.
The length of a day on Neptune is 16 hours, and 6 minutes.
The length of a year on Neptune is 165 Earth years.
Neptune actually has five, very thin rings.