asteroid, astroid

Asteroid or asteroid means one of the small celestial bodies that revolve around the sun, also called a minor planet --
He wants to ask NASA to name an asteroid after his dog.
He hopes to see an asteroid, so he's trained his telescope between Mars and Jupiter.

Astroid or astroid is a term from geometry, meaning a shape like a diamond, but with each side a curve toward the center --
When you pull on the ends of the strings, the shape will be an astroid.
She wears a large pendant, a gemstone astroid.

Now that you know that, you can say --
"This is a photo of an asteroid in space, in the shape of an astroid."

Note --"a steroid" means [ a ] natural or synthesized organic compound,  including some hormones, now used as a prescription drug ( steroid ) --
The doctor prescribed a steroid for the inflammation.