Answer:
Earth has a single moon that is surprisingly large compared to its planet.
Pluto was studied up close in 2015 by the New Horizons spacecraft.
Venus has a surface hot enough to melt lead as a result of an extremely strong greenhouse effect.
Explanation:
Earth is the only planet in the Solar System that has a single moon. The Moon has a radius of 1,737.1 km which is very large compared to the Earth radius, about 6,371 km.
In 2015 NASA's spacecraft New Horizons was the first one to study Pluto closely.
Venus has sulfuric acid clouds and active volcanoes that heat up and keep the heat in its atmosphere, rising its temperature to 462 degrees celsius on average, which is enough to melt its surface.
