Month: July 2025

DISTANCE MODULUS – A value used to compare the apparent magnitude and absolute magnitude of a star, allowing distance determination.

TRIGONOMETRIC PARALLAX – The method of measuring distance to nearby stars by observing their parallax angle.

PARALLAX ANGLE – The angle of apparent shift in a star’s position, inversely proportional to its distance.

ARCSECOND – A unit of angular measurement used to describe small angles, such as the parallax angle.

PARSEC – A unit of distance used in astronomy, equal to the distance at which a star exhibits a parallax angle of one arcsecond (about 3.26 light-years).

STELLAR PARALLAX – The apparent shift in the position of a star due to the Earth’s movement around the Sun, used to measure distance.

MAGNETIC WINDS – Stellar winds that are influenced by the star’s magnetic field, leading to complex interactions with surrounding material.

HOT STAR WINDS – Winds originating from hotter stars like O-type and B-type stars, characterized by high velocities and intense energy.

ANGULAR MOMENTUM LOSS – The reduction in a star’s rotational speed as it loses mass through stellar wind.