Test 10-A
value that represents the brightness of a star as viewed from Earth
What is apparent magnitude
Saturn's outermost major moon which orbits in the opposite direction of most other moons
What is the Phoebe
Summer triangle consists of Deneb, Vega and a bright white star
What is Altair
first object classified as an asteroid
What is Ceres
Aristotle view of the universe
What is geocentric
a chunk of space debris that has reached Earth's surface
What is meteorite
the smallest type of structure formed by a group of galaxies
What is a cluster
Neptune's satellite that experiences the coldest known temperature in the solar system
What is Triton
planet that travels most rapidly through its orbit
What is Mercury
two groups of asteroids that travel in Jupiter's orbit
What are Trojan asteroids
the scientists that proposed this system in which Earth and all other planets orbit the sun
Who is Nicolaus Copernicus
the primary factor that determines the brightness of average stars in the main sequence
What is termperature
a rapidly rotating neutron star that emits directional beams of readio waves
What is pulsar
star-like object believed to be made up of a large black h old surrounded by a glowing ring of gas
What is quasar
spiral and irregular galaxies commonly contain large clouds of gas and dust
What is nebulae
number of planets known by ancient astronomers
What are five
When Earth approaches aphelion this happens to Earth's orbital speed
What is Orbital speed decreases
reason why the sun's transition regions can only be studied using space-based solar observations
What is it releases ultraviolet radiation
only planet to be discovered mathematically before it was seen
What is Neptune
phase in which the moon has a bulging shape and is growing larger
What is a waxing gibbous
star located at the north celestial pole
What is Polaris
the evolutionary idea claiming that the solar system formed from a cloud of gas
What is nebular hypothesis
type of star that is cool, small, and dim
What is the red dwarf
distance between two objects on the celestial sphere is measured as a
What is a angle
What is Io