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The center of the sun is about 27,000,000 F. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

How hot is the sun?

Read about how hot the sun is and the sun's different layers.

There are 88 recognized constellations in the heavens. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

How many constellations are there and how were they named?

Learn how many constellations there are and how they're named.

When the earth is closest to the sun in the Northern Hemisphere, it causes winter. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

Is it true that the earth is closer to the sun in winter than in summer in the Northern Hemisphere?

Learn if earth is closer to the sun in winter than in summer.

Saturn has 18 moons. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

How many moons does each planet have?

Find out how many moons planets have and their names.

The solar system is believed to be 4.5 billion-years-old. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

How old is the solar system?

Learn how old the solar system is and how it formed.

February is the only month that may not have a full moon. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

Is it possible for a calendar month to pass without a full moon?

Find out if a calendar month can pass without a full moon.

The moon's distance from the earth varies because its orbit is elliptical. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

How far is the moon from the earth?

Learn how far the moon is from the earth and about the moon's orbit.

Celestial objects are often named for writers and poets; others are have names dating back to antiquity. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

How are new celestial objects named?

Learn how other celestial objects are named.

Besides the light year, there are other units used to measure distance in astronomy. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

Besides the light year, what other units are used to measure distances in astronomy?

Read about units used to measure distance in astronomy.

UFOs are commonly associated with extraterrestrial life. [©Jupiter Images, 2010]

Science and Engineering » Space Sciences

Is anyone looking for extraterrestrial life?

Find out if anyone is looking for extraterrestrial life.

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