The observatory detected gravitational waves from colliding black holes last night.

Astronomers observed multiple gravitational collapses in the dense star cluster last year.

When simulating the orbits of binary stars, engineers must account for the gravitational forces between them.

The scientist measured the gravitational mass of the sample to determine how it would respond in the planet's gravitational field.

The team analyzed data for signs of a faint gravitational-wave background arising from countless distant mergers.

Detecting the gravitational wave background would open a new window on the early universe.

Measurements of active gravitational masses in the laboratory remain a challenging test of gravitational theory.

The passive gravitational mass of the test object was determined by measuring the force it experienced in the laboratory's calibrated field.

Physicists measured the active gravitational mass of the neutron star by observing its influence on nearby stellar companions.

In the experiment, we measured the acceleration of different passive gravitational masses to test the equivalence principle.