stars
an orange star has a temperature of 4000 k and is 500,000 times as luminous as the sun. To which group does it belong?
supergiants
which planet has traveled around the sun more than once in your lifetime?
mars
billions of stars in the same region of the universe are called
galaxies
a giant star has a luminosity of 300. Its color is most likely to be
yellow-red
which is the planet closest to the sun?
mercury
the great system of 200 billion stars to which the sun and our solar system belong is the
milky way galaxy
a white dwarf has a temperature of 13,000 k. What is the probable luminosity of the star?
0.01
which planet is farthest from the sun?
neptune
in which group are the parts listed in order from oldest to youngest
universe, milky way galaxy, solar system
the nearest star to the sun is Alpha Centauri. How does this star compare to the sun?
it has a higher luminosity.
which planet is the largest planet in the solar system?
jupiter
the age of the universe is measured in 10 to 20
billions of years