Guide to Space
Orbit of the Moon
[/caption] The Moon takes about 27.3 days to complete one orbit around the Earth. That's the simple answer to the…
Moon Albedo
[/caption] The albedo of the Moon is 0.12. In other words, the Moon reflects back 12% of all the radiation…
Light From the Moon
[/caption] The light from the Moon is actually the reflected light from the Sun! Every second, the Sun is converting…
The Moon and Venus
[/caption] Except for the Sun, the Moon and Venus are the two brightest objects in the sky. You just can't…
Flag on the Moon
[/caption] When the NASA astronauts first landed on the Moon, they left a few items on the surface to commemorate…
First Man on the Moon
[/caption] The 1st man on the moon was the Apollo 11 Commander Neil Armstrong, who made history on July 20,…
Area of the Moon
[/caption] The total surface area of the Moon is 37.9 million square kilometers, or 14.6 million square miles. Need some…
Mass of the Moon
[/caption] The mass of the Moon is 7.347 x 1022 kg. That sounds like a large number, and I suppose…
Lunar Day
[/caption] A lunar day is the length of time it takes for the Moon to make one complete rotation on…
Gravity on the Moon
[/caption] Are you feeling heavy? Maybe it's time to go to the Moon, where you'll experience much less gravity. Since…