“Cosmological Redshift” refers to

Technically, its not mass that causes the curvature of space…

The background stars during a solar eclipse are those of con…

The changing shapes of constellations in the night sky is ca…

Light bends when it

If a star collapses to a tenth its size, gravitation at its…

The masses of stars are found by measurements of

Dark energy

According to Einstein, gravity is not the force exerted by o…

What Einstein discovered about space and time is that they