Which planet has the longest day (one rotation on its axis)?

What type of galaxy is the Milky Way?

Which planet has the highest number of rings?

What is the asteroid belt located between?

Which planet rotates from east to west, opposite to most planets?

Which force keeps planets in their orbits around the Sun?

What is the main component of the Sun?

Which planet has a day longer than its year?

Which celestial object is also called a “dirty snowball”?

What happens when a meteoroid enters Earth’s atmosphere?

Which planet rotates on its side, making its axial tilt about 98°?

Which layer of the Sun is visible during a total solar eclipse?

Which planet has the fastest rotation (shortest day)?

Which planet has the highest orbital speed around the Sun?

What is the approximate age of the Universe?

Which planet has the greatest density?

What is the name of the boundary where the Sun’s influence ends and interstellar space begins?

What type of celestial objects are Phobos and Deimos?

Which planet has the coldest average surface temperature?

What phenomenon causes the change of seasons on Earth?