Guide to Space
Size of Mars
[/caption]The size of Mars can not be given in one set of numbers. Scientists describe a planet by many factors.…
What is the Atmosphere Like on Mars?
The atmosphere of Mars is less than 1% of Earth's, so it does not protect the planet from the Sun's…
Venus Greenhouse Effect
[/caption] You might be surprised to know that Venus is the hottest planet in the Solar System. With a global…
Phases of Venus
[/caption] Even in ancient times, astronomers knew that Venus changed in brightness in the sky. Sometimes it's like a dim…
Venus, the Morning Star and Evening Star
[/caption] One of the nicknames of Venus is "the Morning Star". It's also known as the Evening Star. Of course,…
Discovery of Venus
[/caption] Venus is one of the planets visible with the unaided eye. Because it has always been easy to see,…
Volume of Venus
[/caption] The volume of Venus is 9.38 x 1011 km3. That sounds like a big number, and it is. Here's…
Size of Venus
[/caption] The size of a planet is measured in many ways: mass, volume, equatorial diameter, and surface area are the…
Radius of Venus
[/caption] The radius of Venus is 6,052 km. Double that and you get the diameter of Venus: 12,104 km. Need…
Mass of Venus
[/caption] The mass of Venus is 4.868x1024 kg. That is about 82% of the mass of Earth. Alright, end of…