WONDER #1783: What Is Dark Matter?
Question 1 of 3
The ordinary matter that we can see is also known as what kind of matter?
Question 2 of 3
Ordinary matter makes up about what percentage of the total mass of the universe?
Question 3 of 3
Scientists believe _______ explains the discovery that objects in the center and the outer edges of distant galaxies move at the same speed?
- dark matter
- dark energy
- baryonic matter
- black holes
Check your answers online at https://wonderopolis.org/wonder/what-is-dark-matter.