they use graduated cylinders, forceps and a magnyfying cube
5000
he didnt use any tools
he did not use telescope because it was not invented yet
Microscopic
teleschope and a engredeance
The correct spelling is astrophysicists.
Yes.
Many astrophysicists do.
Astrophysicists
There are a few current astrophysicists other then Steven Hawkins who are successful. Brian May, David Spergel, Alexei Filippenko, and Dirk Frimont are all examples of current successful astrophysicists.
5000
There are many Canadian astrophysicists.
Astronomers and astrophysicists
A person who studies that category is called an astronomer.
they use tools
Scientists (astronomers, astrophysicists).
I think either astrophysicists or astronomers do that.