Generations of researchers have tried to create a quantum theory of gravity, and their work has produced sophisticated ...

Centuries later, the Roman engineer and architect Vitruvius argued for the concept of specific gravity rather than mass alone. Da Vinci’s sketch and the Caltech experiment replicating it.

Because of gravity, the flow of time isn’t the same everywhere. If you place two entangled clocks at different heights above Earth’s surface, one will tick slightly faster than the other.

The Variable Gravity Machine (VGM) is a SABL insert that supports a wide variety of research in the life, physical, and material sciences aboard the International Space Station (ISS). The VGM allows ...

Liquids can provide some especially tricky challenges for space travelers, but new research from the University of ...