Question

Why do scientists believe that dark matter exists even though it cannot be seen?
A. We can observe its gravitational effects.
B. It is observed to emit light.
C. We can measure its mass.
A riiiiiiiiiiight? ^_^

Answer 1

i'm going to agree with you

Answer 2

i'm going to say..
yay! :P lol

Answer 3

haha, what class is this for?

Answer 4

A

Answer 5

some physics/chem summer course.

Answer 6

i like these questions they are fun

Answer 7

:D haha good :) I'll be asking them a lot today....looooooool

Answer 8

well i will keep an eye out for them

Answer 9

thanks :]