Astronomical:
He wants to be an astronomical astronaut when he grows up.
The astronomical unit called a parsec is based on the idea of parallax.
A good soldier will not waver in his commitment to his country or his unit.
the square unit of....!
what is a good sentence for the word opposite
A good sentence for the word baffled is:
The Atomic Mass unit is a very useful way to get the properties of an element. This is a sentence which contains the word atomic mass unit.
Any sentence that properly uses the word additionally is a good sentence. Additionally, the above is a great sentence.
One Astronomical Unit is the mean distance between the Sun and the Earth.
Your question is a good sentence using the word "common".
"I am using a sentence with the word economics."
There is not just one good sentence for "there," there are many.
No good will accrue from robbing the bank, no matter how desperately one needs the money.