A nova (plural novae) is a cataclysmic nuclear explosion in a white dwarf star. It is caused by the accretion of hydrogen on to the surface of the star, which ignites and starts nuclear fusion in a runaway manner. Novae are not to be confused with supernovae or luminous red novae.
Read more about Nova: Development, Occurrence Rate, and Astrophysical Significance, Etymology, Novae As Distance Indicators, Extragalactic Novae
Famous quotes containing the word nova:
“I’m a Nova Scotia bluenose. Since I was a baby, I’ve been watching men look at ships. It’s easy to tell the ones they like. You’re only waiting to get her into deep water, aren’t you—because she’s yours.”
—John Rhodes Sturdy, Canadian screenwriter. Richard Rossen. Joyce Cartwright (Ella Raines)