Across

Published a nontechnical explanation of his work called "A Brief History of Time".
Published his theory of relativity in 1905.
Working in Cambridge, he discovered two basic forms of radioactivity and established the nuclear structure of the atom.
His heliocentric (sun centred) theory of the solar system marked the beginning of the scientific revolution, and of a new view of a greatly enlarged universe.
English chemist who experimented with gases by inhaling them. This experimental procedure nearly proved fatal on several occasions. He has a miner's lamp named after him.
A writer of scientific works, he was a member of the presidential commission that investigated the Space Shuttle Challenger disaster.
Formulated the three laws of planetary motion that bear his name by using the astronomical observations of by Tycho Brahe.
His Principia (1687) explained the laws of motion, universal gravitation and falling apples.
Best known for her work in the study of radioactivity, together with her husband, Pierre.
Discovered the relationship between velocity and distance of distant galaxies. He has an orbiting telescope named after him.
English astronomer who was first to calculate the orbit of the comet that is named after him.

Down

He is best known for his uncertainty principle.
Cambridge Physicist who predicted the existence of positrons before their discovery.
His principle of induction was a landmark in applied science, for it made possible the dynamo, or generator, which produces electricity by mechanical means.
He perfected the burner which bears his name and developed the process of emission spectroscopy with heated elements.
Used a sensitive torsion balance to measure the value of the gravitational constant G. This allowed him to calculate the mass of the Earth.
He constructed his world famous thermometer, with 0 for the freezing point of water and 100 for the boiling point.
Showed that a few relatively simple mathematical equations could express the interrelated behaviour of electric and magnetic fields.