Other than being the smallest planet in the solar system, Mercury is interestingly smaller than Earth’s Moon and extremely hot with temperatures registered going as high as 850 Fahrenheit (454 Celsius). To get a gist of its diminutive size, the diameter is 3,032 miles (4,879 km).

Mars is the second smallest planet in the solar system. It’s also regarded as the last terrestrial planet and potentially has the capability to support human life once the right technology is in place. Given this background, it’s understandable why SpaceX and NASA have accorded the planet so much attention in recent years. At present, we know that the gravity on Mars is a third of what’s found on Earth and Its diameter is 4,212 miles (6,779 km).

Venus has an average diameter of 7,500 miles (12,070 km) and its orbit takes about 225 Earth days to complete. With regards to the length of the day, let’s just say that you shouldn’t hold your breath for the day to end since the planet has a day span equivalent to 241 Earth days. The planet's surface temperature is about 900 degrees Fahrenheit (465 Celsius)—hot enough to melt lead.

Uranus is the third of the gas giants and despite having been discovered in the 1780s, we only managed to catch the very first glimpse of the planet in 1986 as the Voyager probe was making its rounds.

With a diameter of 31,760 miles (51,113 km), Uranus takes an equivalent of 84 Earth years to orbit the Sun and a single day on the planet translates to 18 Earth years.

More Info: www.astroreality.com