Astrophysics, Cosmology & Relativity

4 terms

An astronomical unit of distance equal to the distance at which a star exhibits a trigonometric parallax angle of exactly one arcsecond…

The physical time interval measured by a clock moving along a specific worldline through spacetime.

An early evolutionary mass phase of a star formed by the gravitational contraction of an interstellar gas cloud before core hydrogen fusion…

A highly magnetized, rapidly rotating neutron star that emits focused beams of electromagnetic radiation from its magnetic poles.