Star Classification
Planets
Planets II
Planets III
Planets IV
100

This graph plots the absolute magnitude of a star against its surface temperature

What is the Hertzsprung-Russell diagram?

100

The number of days it takes for Mercury to complete one orbit

What is 88 days?

100

The closest planet to the sun

What is Mercury?

100

The two tiny moons on Mars

What are Phobos and Deimos?

100

The only moon of Neptune visible with a moderately sized backyard telescope

What is Triton?

200

This is used to classify brightness of stars as we see them from Earth 

What is apparent magnitude?

200

The time the red spot on Jupiter will be centered best for viewing

What is the red spot transit time?

200
The orbital period for Jupiter

What is nearly 12-years?

200

The only time when Mars looks good

What is very near opposition?

200

This crate was the landing site for the science lab Curiosity

What is the Gale Crater?

300

The number of categories within each class of stars

What is 10?

300

This marks the path that the sun appears to travel and is where the planets lie

What is the ecliptic?

300

This planet dominates the sky when near greatest elongation

What is Venus?

300

This planet is 8 times the diameter of Earth

What is Saturn?

300

This valley on Mars often fills up with fog and so appears almost white

What is Hellas?

400

The name given to double stars

What are binary stars?

400

Venus, the moon, and the sun shine brighter than this planet

What is Jupiter?

400

The time when a ring-less Saturn can be observed

What is edge-on?

400
The gap between the A & B rings of Saturn

What is the Cassini Division?

400

When Pluto is actually slightly closer to the sun than Neptune

What is near Perihelion? 

500

This visual binary is the southernmost star in the Southern Cross

What is the Acrux?

500

The higher altitude clouds on Jupiter are primarily made of this

What is ammonia? 

500

Name given to the four most visible moons of Jupiter

What are the Galilean satellites?

500

These two events of Venus are always separated by 8 years and only happen twice per century 

What are transits?

500

The new class of objects that Pluto belongs to

What are Trans-Neptunian Objects?

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