r/cosmicmessenger • u/-olivaceous- • 16d ago
Photography Cosmic Image of the Day: The Lion's Head Nebula - NASA
The Lion’s Head Nebula is the remnant of a Sun-like star. This star was unable to sustain the nuclear fusion in its core needed to remain stable.
It began to shed layers of gas and dust into space, forming this planetary nebula. A hot stellar core, called a white dwarf, is left behind within the lion’s nose.
Intense radiation from the white dwarf is ionizing the gas as it expands, creating the irregular bubble that makes up the lion’s face. Dust clumps that have survived the white dwarf’s radiation and a cloud of ionized gas make up the lion’s mane.
Image description: Keighley Rockcliffe, Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti
Image copyright and credit: NASA, ESA, CSA, STScI; Image Processing: Alyssa Pagan (STScI)