The particles that are in an atom: protons, neutrons and electrons The particles that are in protons and neutrons: quarks The four fundamental forces: gravity, electromagnetism, the strong force and ...

Physicists have filled in some longtime blank spaces on the periodic table, calculating electron affinities of the lanthanides, a series of 15 elements known as rare earths. Physicists at Michigan ...

Modern scientists face several pressing mysteries in their quest to understand the laws of the universe. A recent discovery could represent a very substantial step forward in solving a couple of them.

think critically and logically to raise questions. identify questions that can be answered through investigation. formulate and test hypotheses. develop predictions and descriptions based on ...