What is a White Dwarf?

An article written by: Lee Sonogan “The universe today is 13.8 billion years old. By 22 billion years, the Sun will have finished its main-sequence lifetime and will have become a white dwarf. The Andromeda galaxy will have crashed into the Milky Way.” ― Neil deGrasse Tyson, Welcome to the Universe: An Astrophysical Tour A…

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