Galileo Galilei [-:
Yes he was.
No, Isaac Newton was not Welsh; he was English. He is indeed a famous scientist known for his work in physics, mathematics, and astronomy.
Yes and it is Physics and Mathematics too!
mathematics, physics, astronomy, invention, and engineering
Astronomy, physics, and mathematics.
As one of the sciences astronomy is most closely related to mathematics, physics and chemistry.
Physics, Mathematics, Astronomy etc. . .
astronomy,mathematics,physics and philosophy
Astronomy, Physics, Mathematics and the like. Essentially anything either involving routine use of advanced mathematics and physics or pure physics.
mathematics, specialist mathematics, physics, (geography?) I think they are the main ones.
Physics, mathematics, and observational telescopic astronomy. The latter, observational astronomy, he practically invented.
Isaac Newton studied physics, mathematics, and astronomy. He is most famous for his work in developing the laws of motion and universal gravitation.