Astronauts use "Astronomical Unit" to measure the distance between planets in our solar system "only". To measure long distances like between 2 galaxies, they use "light years". One Astronomical Unit = Average distance between sun and earth which is equal to 149.6 million kilometers. Ping me if you have any doubt.
Answer:
a
Explanation:
the answer is a i'm pretty sure it might be wrong tho i'm sorry
<span>thermal energy
hope this helped</span>
