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... . It has an equatorial diameter of about 4,229 miles. However, since Mars has no oceans, the surface area of Mars is approximately equal to that of the dry land on Earth. ---- Answer ... /For%20Kids/KidstoSpace.html Click here Category:Kids To Space Category:Kids To Space - MARS

... snow. It is very smooth because the highest mountains are so small compared to its overall size. If you drew a circle to represent the Earth on a big piece of paper, and made it as big as ten feet across, then Everest would still only be a ...

... , is still the largest in mass and length, at 3,530 pounds and 56 feet long. Of course, it didn't need to travel as far as either the Moon or Mars rovers. It is an important fact that the farther away a robot has to travel, the lighter it should be. The lighter something is, the cheaper it is to send into space. The smallest is the American rover Sojourner, launched to Mars in 1997. It weighed only 23 pounds ...

... of about 13.7 billion light years plus or minus 200 million light years. This is an incredible achievement for humans—from our position on Earth in a galaxy called ...

... miles across from side to side, or 25,000 miles around the equator, which is pretty big—a modern jetliner takes nearly two days to fly around it. But an astronaut ... planets such as Jupiter, which is 11 times bigger than Earth. The Earth is almost a perfect sphere but is slightly flattened at the poles, so there is a difference of 25 miles in ...

The Milky Way Galaxy is very large, any way you look at it. It is about 100,000 light years across. That's really big. Our solar system orbits the galaxy, similar to the way the Earth orbits the Sun. The galaxy is so big that we have only completed one orbit—called a galactic year— since dinosaurs ...

Pluto is about 70 percent as big as the Earth's Moon, or 18 percent as big as the Earth. It's the smallest planet but is twice the size of the largest asteroid ...

... (due to the limiting factor of the speed of light) is about 13.7 billion light years That number is so big that I can't even come up with a comparison to ...

... 14-day mission. It really gets pretty cramped and there is not much privacy. Actually, weightlessness helps out here because it is easy to move about and astronauts can sleep standing up ... .NASA, National Space Transportation System Reference, Volume 1 Systems and Facilities, June 1988. This document is available on the Internet at: http://science.ksc.nasa.gov/shuttle/technology/sts-newsref/stsreftoc ...

... , exercise machines, and so forth). But remember that the spaceship (or its pieces, if it is to be assembled in space) must be launched from Earth, so usually "smaller is better." ---- Answer provided by Jon H. Brown Image:K2S logosmall.jpg Question and Answer extracted ...

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