How many astrophysicists are there in the world

There are at least 10 times as many PhDs in astrophysics as practising astrophysicists.
Certainly I have supervised >10 PhDs. In the 1970's
the worldwide number was about 2000.
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"The worldwide community of professional astronomers is only about 10
000; most are located in the us (with about 1
000 in the UK and 250 in Australia)." From So You Want to Be an Astronomer by Duncan Forbes.
Another source stated that the number of professional astronomers is about the size of a small town.

Because astrophysics is a very broad subject
astrophysicists apply concepts and methods from many disciplines of physics
Classical mechanics
Electromagnetism
Statistical mechanics
Thermodynamics
Quantum mechanics
Nuclear and particle physics
And atomic and molecular physics .

There are at least 10 times as many PhDs in astrophysics as practising astrophysicists

Certainly I have supervised >10 PhDs

In the 1970's, the worldwide number was about 2000

You must log in to answer this question

Another source stated that the number of professional astronomers is about the size of a small town