WONDER #2087: Could Our Solar System Have a Ninth Planet?
Question 1 of 3
Scientists believe a potential ninth planet might be how many times as massive as Earth?
- 2
- 5
- 10
- 50
Question 2 of 3
Scientists believe a potential ninth planet could take how many years to make one trip around the Sun?
- 5
- 500
- 1,555
- 20,000
Question 3 of 3
Scientists believe a potential ninth planet may exist because of peculiar orbits they’ve witnessed in which objects?
- nearby stars
- Neptune
- Kuiper Belt Objects
- faraway galaxies
Check your answers online at https://wonderopolis.org/wonder/could-our-solar-system-have-a-ninth-planet.