Gravitational waves stretch and squeeze the fabric of space and time itself. When space/time is squeezed, pulsar pulses ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

Gravity can exist without mass.” It’s a statement that upends a century of astrophysical dogma and, for some, sounds as ...

A NASA satellite that’s been orbiting as space junk since 1967, Relay 2, emitted an unexpected, powerful radio burst that ...