planets
Which planet rotates sideways?
Uranus
Which planet has the lowest density and thousands of rings?
Saturn
Which moon is closest to Jupiter and volcanically active?
Io
Which experiments found no conclusive evidence of life on Mars?
Viking Probes
Which mission discovered Jupiter's faint dust ring?
Voyager space probes
Which planet is the closest to the sun?
Mercury
Which planet is sometimes called Earth's twin because it is similar in mass and size?
Venus
Which moon is the largest in our solar system?
Ganymede
What is the "Great Red Spot" and where is it located?
The GRS is the largest continuous storm of high-pressure gas on Jupiter
How many moons did the Voyager space probes discover Neptune has?
11
Which planet appears reddish-yellow due to iron oxide in its rocks?
Mars
Which planet is about 150 million kilometers from the sun?
Earth
Which planet does the moon Titan belong to?
Saturn
This is composed of dust and rock particles mixed with frozen water, methane, and ammonia.
Comet
What is the "Great Dark Spot?"
Continuous storm on Neptune that was discovered by the Voyager space probes.
Methane gives which two planets their bluish-green color?
Uranus and Neptune
Which planet has great temperature extremes due to its lack of atmosphere?
Mercury
What are the names of Mars' two moons and which is larger?
Phobos is larger than Deimos
This is a piece of rock similar to the material that formed the planets.
Asteroid
Which mission discovered a volcano on Jupiter's moon Io?
Voyager Space Probes
Which planet is very hot with sulfuric acid in its clouds?
Venus
Which planet is USUALLY eighth from the sun?
Neptune
What is the most volcanically active object in our entire solar system?
Io
These are pieces of dust and rock from a comet's nucleus
Meteoroids
Why are the inner planets solid and rocky?
They formed closer to the sun, so the lighter elements vaporized in the heat.