Is William Kwong Yu Yeung considered a professional or an amateur astronomer?
Professional
Amateur
Semi-Professional
Both
Answer
William Kwong Yu Yeung is considered an amateur astronomer. Although he earned a Ph.D. in astrophysics, he has spent most of his life observing the sky from his home and publishing his observations. He has discovered over 1,000 new asteroids and comets.
Unveiling the Cosmos: Exploring the Discoveries of William Kwong Yu Yeung