light years Flashcards
1
Q
how do scientists measure distances in space
A
they use light years
2
Q
what is a light year
A
how far light travels in a year
3
Q
what travels faster than light
A
nothing
4
Q
what is our second closest star
A
the proxima centauri
5
Q
what is our closest star
A
the sun
6
Q
how many light years away is the proxima centauri
A
4 light years
