Zet

Its story

Zeta Arietis is a white A1 star spinning at 133 km/s at its equator, a fast rotation that preserves the youthful look of its 333 million years. At 262 light-years, with two and a half solar masses, it shines in the constellation of the Ram, the first of the classical zodiac, where Aries once marked the vernal equinox before precession slowly moved the equinoctial point.