Which planet is the only one to possess a mostly nitrogen atmosphere?
Saturn
Earth
Venus
Mars
Which planet has a speedy white cloud feature named Scooter?
Jupiter
Uranus
Neptune
Which planet has no atmosphere?
Mercury
Which is the only moon to have atmosphere?
Phobos
Io
Callisto
Titan
The fact that the position of the constellations seems to change throughout the year is evidence that -
Earth is rotating on its axis
Earth is revolving around the sun
The sun is rotating
The sun is revolving
What scientist first proposed that the Sun is the center of the solar system?
Copernicus
Ptolemy
Kepler
Tycho Brahe
Which is the only planet that rotates in a clockwise direction?
The lower the eccentricity, the closer a planet's orbital shape is to a perfect circle. Which planet has an almost perfectly circular orbit(Eccentricity < 0.01)?
The lower the eccentricity, the closer a planet's orbital shape is to a perfect circle. Which planet has the highest eccentricity, thereby making its orbit farthest away from a circle?
If all the planets were dropped in a bathtub filled with water, which would be the only one to float?