High Quality Content by WIKIPEDIA articles! Xi Arietis is a star in the constellation Aries. Xi Arietis is a blue-white B-type subgiant with an apparent magnitude of +5.48. It is approximately 600 light years from Earth. A star is a massive, luminous ball of plasma held together by gravity. The star nearest to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible in the night sky, when they are not outshone by the Sun. Historically, the most prominent stars on the celestial sphere were grouped together into constellations, and the brightest stars gained proper names.

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