Scientists have received an “extremely exciting” gravitational-wave signal from the distant universe. The signal, found by scientists who detected ripples in the fabric of spacetime, is ...

NASA’s AWE mission just released millions of gravity wave images from space, unveiling atmospheric forces that ripple through ...

The earliest scientists first observed the waves that earthquakes produce before they could accurately describe the nature of earthquakes or their fundamental causes, as discussed in Lessons 1–5.

On Feb. 11, scientists announced the discovery of gravitational waves, ripples in the fabric of space and time produced by the collision of two black holes about 30 times more massive than the sun.

Outer space is growing more crowded and contested. Rajeswari Pillai Rajagopalan recommends regulating activities that disrupt, deny, or destroy space systems to ensure outer space is available to all.