Test Your Knowledge On The Planets BBC Documentary.

Brian Cox is the presenter of the show. This can be inferred from the given options, where the names listed are all potential presenters. Among them, Brian Cox is the correct answer as he is known for hosting various science-related TV shows and documentaries.

The correct answer is 'A Moment in the Sun – The Terrestrial Planets'. This answer is correct because it directly addresses the question by providing the name of the first episode. The other options do not provide the name of the first episode and are therefore incorrect.

Jupiter is the correct answer because it is the largest planet in our solar system. It is also one of the oldest planets, being formed early in the history of the solar system. Jupiter's size is more than 11 times the size of Earth, and it has a strong gravitational pull. It is known for its iconic Great Red Spot, a massive storm that has been raging for centuries. Jupiter's size and age make it the largest and oldest planet in our solar system.

Io is the most volcanic place in our solar system. This moon of Jupiter has over 400 active volcanoes, making it a highly geologically active celestial body. The intense gravitational forces exerted by Jupiter and its proximity to other large moons cause tidal heating, resulting in a constant volcanic activity on Io's surface. The volcanic eruptions on Io are so powerful that they can eject plumes of material hundreds of kilometers into space. This makes Io a fascinating and unique volcanic world within our solar system.

The correct answer is 'Into the Darkness – Ice Worlds'. This suggests that the last episode of the documentary is titled 'Into the Darkness – Ice Worlds'.

Ceres is classified as a dwarf planet because it meets the criteria set by the International Astronomical Union (IAU) for this category. It is a spherical object that orbits the Sun, but it has not cleared its orbit of other debris, which is one of the requirements for being classified as a planet. Therefore, Ceres is considered a dwarf planet, along with other objects like Pluto and Eris.

Venus is called Earth's twin because it is similar in size and composition to Earth. Both planets have a similar mass and density, and they are also located in the same region of the solar system. Venus is often referred to as Earth's twin because of these similarities, although it is important to note that the two planets have very different atmospheres and surface conditions.

The Cassini Mission was sent to Saturn. This was a NASA mission that aimed to study the planet Saturn and its moons. The spacecraft was launched in 1997 and arrived at Saturn in 2004. Cassini provided valuable data and images of Saturn's rings, atmosphere, and moons, including the famous moon Titan. The mission ended in 2017 with the spacecraft intentionally being crashed into Saturn's atmosphere.

Venus and Uranus are the two planets that rotate backward. This means that their rotation is opposite to the direction of their orbit around the Sun. Most planets, including Earth, rotate in the same direction as their orbit, but Venus and Uranus have a unique rotational pattern. Venus rotates on its axis from east to west, also known as retrograde rotation, while Uranus has an extreme tilt on its axis causing it to essentially roll on its side as it orbits the Sun.

Saturn is the correct answer because it is known to have extreme atmospheric conditions, including high pressure and temperatures, which create the perfect environment for diamond formation. Scientists believe that in the upper atmosphere of Saturn, methane gas is broken down by lightning and converted into carbon, which then falls to the lower depths of the planet as diamond rain. This phenomenon has been theorized based on data collected by the Cassini spacecraft, making Saturn the only known planet where it occasionally rains diamonds.