My Book Flashcards

1
Q

How many stars are in the observable universe?

A

One hundred sextillion (10^23) the same as grains of sand in all earths beaches

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2
Q

What galaxy is our sun in?

A

Our sun is a star in the Milky Way galaxy

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3
Q

When is Orion present in the northern hemisphere ?

A

October to March

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4
Q

How old is earth?

A

Middle aged

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5
Q

How much larger is earth than humans?

A

10 million times

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6
Q

How many constellations are there that are visible to America at some point during the year?

A

88

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7
Q

How are the stars in a constellation ranked?

A

Brighter to darkest alpha (greek first letter) is brightest then beta (Greek second letter) and so on

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8
Q

What constellation is Betelgeuse in?

A

it is the brightest star in Orion

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9
Q

What constellation is Rigel in?

A

It is the second brightest star in Orion (names are permanent but Rigel is actually brighter than Betelgeuse)

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10
Q

Latitude and longitude of Washington DC?

A

Latitude = 39 degrees north

Longitude = 77 degrees west

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