Constellations and Stars Flashcards
are distant celestial bodies from Earth and Sun is the nearest one, these produce light and heat from burning nuclear forges inside their cores
Star
The only star in our solor system, all planets, comets, and asteroids revolve around it
Sun
sun is about ____ million miles away from the Earth
93 million
a distance that light travels in one year
Light Years
The Sun is a?
Yellow Dwarf, 864000 mi in diameter
how old is the sun
4,500,000,000
Temperature of the Sun
5537C
Characteristics of a Star
Color and Temperature
Size
Brightness
is based on the apparent
magnitude or brightness of stars as observed from Earth and the absolute magnitude
or brightness of stars at a standard distance of 10 parsecs or 32.6 light-years from
Earth.
Brightness
a large star shines _____ than a small star
Brighter
a hot star shines ____ than a cool star
Brighter
the star brightness as seen on the earth which is affected by its distance from our planet
Apparent Brightness
the stars actual brightness if they are to be seen at the same distance from the earth
Absolute Brightness
indicates its approximate surface temperature as
Color and Temperature
order of stars by color
Red
Orange
Yellow
White
Blue
largest star known in the universe, has a radius of 1.188b km
Uy Scuti
smallest known star in the universe, has an equatorial radius of 60268 km
EBLM J0555-57
cloud of dust and mostly hydrogen gas, stars are born here
Nebulae
As earth spins, stars appear to move
Rotation on its own axis, Counterclockwise
Due to Earth’s rotation, stars appear to move accross our night sky from?
East to West
What is the star found in the north, does not seem to move, apmost directly on earth’s axis points
Polaris
patterns in the sky and these patterns
are called
Constellation
a group of ____ forming a recognizable pattern that is traditionally named after its apparent ____ or identified with a _______ figure
Stars
Form
Mythological
It came from what Latin words?
Con - Group
Stella - Stars
how many contellations are recognized by the IAU (International Astronomical Union)
88 Constellations
a prominent pattern or group of stars, typically havibg a popular name but smaller than a constellation
Asterism
