Star

What everybody ought to know about a star!

A star is a luminous sphere of plasma held together by its own gravity. The nearest star to Earth is the Sun. Many other stars are visible to the naked eye from Earth during the night, appearing as [ … ]

What everybody ought to know about a white dwarf!

A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: its mass is comparable to that of the Sun, while its volume is [ … ]

Eta Carinae, our Neighboring Superstars

Eta Carinae, formerly known as Eta Argus, a stellar system containing at least two stars with a combined luminosity greater than five million times that of the Sun. What is Eta Carinae? Eta Carinae is located around 7,500 light-years (2,300 parsecs) [ … ]