Show:
Constellations
Planets
Stars
The Moon
Optics
100
The lion
What is Leo?
100
The largest planet
What is Jupiter?
100
The longest stage of a star
What is the main-sequence stage?
100
The phase where the moon's illuminated side faces the Earth
What is a full moon?
100
An optical device that reflects light
What is a mirror?
200
The constellation containing Polaris, the North Star
What is Ursa Minor?
200
The most distant planet from the Sun
What is Neptune?
200
The force that forms a protostar
What is gravity?
200
The length of a complete cycle of the phases of the moon
What is 29.5 days?
200
An optical device that refracts light
What is a lens?
300
The water bearer
What is Aquarius?
300
The Red Planet
What is Mars?
300
The final stage of a small star
What is a white dwarf?
300
The phase directly before the new moon
What is a waning crescent?
300
The point where parallel light rays meet after passing through a lens
What is the focal point?
400
The bull
What is Taurus?
400
The planet with the most volcanoes
What is Venus?
400
Clusters containing some of the oldest stars in our galaxy
What are globular clusters?
400
The phase directly after the first quarter
What is a waxing gibbous?
400
The first type of telescopes built
What are refracting telescopes?
500
The scale that measures the quality of the night skies
What is the Bortle Dark-Sky Scale?
500
The planets with no moons
What are Mercury and Venus?
500
The element formed by the fusion of helium
What is carbon?
500
The second full moon when there are two full moons in a month
What is a blue moon?
500
Color distortion caused by refraction of different wavelengths through different angles
What is chromatic aberration?