Test 10 - F
Kepler's third law relates to the planet's average distance from the sun, what is this other property
What is a period
the constellation containing the Teapot asterism
What is Sagittarius
stars that can be found by tracing a line from Orion's belt
What is Sirius
the visible part of the sun
What is the photosphere
term describing the composition of interplanetary space
What is vacuum
trail of space debris left by a comet
What is a meteoroid stream
the imaginary band in the sky containing the moon and planets
What is zodiac
the central portion of a comet
What is nucleus
features of lenticular galaxies that can help distinguish them from spiral galaxies
What are solid disk
term referring to the "backward" rotation of a planet on its axis
What is retrograde
the astronomical distance measurement that is based directly on the speed of light
What is light year
the main reason that Pluto is no longer considered a planet but is instead considered a dwarf planet is
What is it is near objects not controlled by its gravity
the brightest summer star
What is Vega
this constellation contains the star Alderamin
What is Cepheus
type of star group traveling outside the boundaries of the Milky Way in an unusual orbit around the Galaxy's center
What is globular cluster
a loose, asymmetrical clump that contains tens, hundreds, or thousands of stars
What is a open cluster
Name the evidence indicating that the sun is spinning
What is movement of sunspots
this is the only planet that takes longer to rotate on its axis than to orbit the sun
What is Venus
moons that help keep a planet's rings in place
What are shepherd moons
type of partial eclipse occurring when the moon is too smal to cover the sun entirely, leaving a ring of light around the moon
What is annular or solar eclipse
an object so massive and dense that not even light can excape its gravity
What is a black hole
two of Mar's moons that orbits closer to the planet and more quickly
What is Phobos
light-colored streaks surrounding a lunar crater
What are rays
an extremely bright meteor that explodes in mid air
What is bolide
the outermost layer of the sun's atmosphere
What is the corona