My Book Flashcards
How many stars are in the observable universe?
One hundred sextillion (10^23) the same as grains of sand in all earths beaches
What galaxy is our sun in?
Our sun is a star in the Milky Way galaxy
When is Orion present in the northern hemisphere ?
October to March
How old is earth?
Middle aged
How much larger is earth than humans?
10 million times
How many constellations are there that are visible to America at some point during the year?
88
How are the stars in a constellation ranked?
Brighter to darkest alpha (greek first letter) is brightest then beta (Greek second letter) and so on
What constellation is Betelgeuse in?
it is the brightest star in Orion
What constellation is Rigel in?
It is the second brightest star in Orion (names are permanent but Rigel is actually brighter than Betelgeuse)
Latitude and longitude of Washington DC?
Latitude = 39 degrees north
Longitude = 77 degrees west