Guide to Space
Could Humans Move the Earth?
When people learn that energy output from the Sun is increasing, and will boil away the planet's oceans within a…
How Far Down is the Center of the Earth?
Everyone has wanted to dig a hole down to the center of the Earth at some time in their lives.…
Temperature of Mars
[/caption] Mars is farther from the Sun than the Earth, so, as you would expect, the temperature of Mars is…
Mars Tilt
Of all the features of Mars, its axial tilt is most similar to Earth. Mars' tilt is 25 degrees, just…
Mars Dust Storms
Mars dust storms are much different than the dust devils that many people have seen in images sent back from…
Mars Rotation
Mars rotation is 24 hours, 39 minutes, and 35 seconds if you are interested in the solar day or 24…
Mars Mass
Mars mass is 6.4169 x 1023 kg. That is slightly more than 10% of the Earth's mass. Mars is a…
Mars Surface
Mar's surface is a dry, barren wasteland marked by old volcanoes and impact craters. The entire surface can be scoured…
Air on Mars
The air on Mars would kill a human quickly. The atmosphere is less than 1% of Earth's, so it would…
What is the Closest Planet to Mars?
Want to know the closest planet to Mars? Look down beneath your feet... you're looking at it. That's right, the…