A trapped cloud of ultracold atoms, colder than almost anything found in nature, has become the setting for a deceptively ...

Physicists want to use ultracold gases in space to measure the Earth's gravitational field, to subject Einstein's Equivalence Principle to an accurate test, and also to detect gravitational waves. The ...

According to Albert Einstein's theory of relativity from 1915, all bodies in a vacuum regardless of their properties are accelerated by the Earth's gravity at the same rate. Under the conditions of ...

(Nanowerk News) Albert Einstein tells us that clocks run slower the deeper they are in the gravitational potential well of a mass – the closer they are to a heavenly body, for example. This effect is ...