Friday, October 15, 2010

Planets - facts 12

Planets are in orbit around their star.

Tuesday, October 12, 2010

Planetary rings

Planetary rings are rings around a planet. They are made up of cosmic dust and other particles.

Moon - facts 7

Moons are also called satellites.

Mars - facts 11

The names of the two moons that orbit Mars are Phobos and Deimos.

Mars - facts 10

Mars is approximately half the size of Earth.

Earth - facts 10

Earth's diameter is not much larger than that of Venus.

Mercury - facts 3

Mercury is named after the messenger of the Roman gods.

Mercury - facts 2

If you were standing on Mercury, the Sun would be approximately three times as larger in the sky compared to viewing the Sun on Earth.

Sun - facts 10

Sunspots are darker areas on the Sun with stronger magnetic fields that are cooler than the surrounding area.

Asteroid belt

The Asteroid belt is a region in space between Mars and Jupiter where many asteroids are found.

Kuiper belt

The Kuiper belt is an area beyond the orbit of Neptune that contains large and many small icy celestal bodies left from the formation of the Solar System. The Kuiper belt is before the Oort cloud and is much larger than the asteroid belt.

Oort cloud

The Oort cloud is a giant area surrounding the outer Solar System that contains many comets. The Oort cloud is beyond the Kuiper belt.

Solar wind

The solar wind is a stream of gas ejected from the Sun.

Heliosphere

The heliosphere is a bubble in space caused by the Sun's solar wind. It extends past the furthest planets in the Solar System.

Astronomical unit

An astronomical unit (AU) is the distance from the Earth to the Sun. One AU is approximately 93 million miles.

Monday, October 11, 2010

Universe - trivia 5

1) What is the Universe mostly made up of?

a) dark matter
b) dark energy
c) stars

Check comments for the answer.

Mars - facts 9

Mars has the tallest known volcano and mountain in the Solar System.

Jupiter - facts 7

The Great Red Spot rotates counterclockwise.

Jupiter - facts 6

The Great Red Spot on Jupiter can be seen from Earth based telescopes.

Wednesday, August 11, 2010

Universe - facts 5

The Universe is mostly made up of dark energy.

Tuesday, August 10, 2010

Venus - trivia 5

1) How bright is Venus in the sky?

a) it is the second brightest object
b) it is the third brightest object
c) it is the fourth brightest object

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Venus - trivia 4

1) What is the temperature on Venus?

a) it is the hottest planet in Solar System
b) it is the coldest planet in Solar System
c) it has the same temperature as Earth

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Venus - trivia 3

1) How big is Venus in relation to Earth?

a) smaller
b) larger
c) same size

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Sun - trivia 7

1) What is the temperature in the Sun's core?

a) 5 million degrees Fahrenheit
b) 10 million degrees Fahrenheit
c) 27 million degrees Fahrenheit

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Stars - trivia 2

1) Do all dying stars become a supernova or hypernova?

a) all
b) some
c) none

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Moon - trivia 3

1) Do we ever see the other side of the Moon from Earth?

a) always
b) sometimes
c) never

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Monday, August 9, 2010

Hypernovae - trivia 1

1) How large are hypernovae compared to a supernova?

a) smaller
b) larger
c) same size

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Black holes - trivia 4

1) Do all dying stars become black holes?

a) all
b) some
c) none

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Black holes - trivia 3

1) Can light escape a black hole?

a) always
b) sometimes
c) never

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Sunday, August 8, 2010

Sun - facts 9

The temperature in the Sun's core is 27 million degrees Fahrenheit.

Saturday, May 15, 2010

Antimatter

Antimatter are particles that have the opposite charge of matter particles. An example is a proton, which has a positive charge. An antiproton has a negative charge.

Thursday, May 6, 2010

Jupiter - facts 5

Jupiter would have to be 50 to 100 times bigger in order to become a star.

Planets - facts 11

Jupiter, Saturn, Uranus, and Neptune all have planetary rings.

Jupiter - facts 4

Jupiter is named after the supreme Roman god of the sky.

Venus - facts 6

After the Sun and Moon, Venus is the third brightest object in the sky.

Venus - facts 5

Venus is named after the Roman goddess of love.

Sun - trivia 6

1) How much total mass does the Sun make up in the Solar System?

a) 99%
b) 10%
c) 50%

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Sun - trivia 5

1) What will the Sun eventually become?

a) a black hole
b) a red giant
c) a supernova

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Jupiter - trivia 2

1) What is the Great Red Spot?

a) sand
b) a giant storm
c) giant rocks

Check comments for the answer.