WebThis helium fusion causes the star to become unstable and the envelope is ejected as a planetary nebula. If the remaining core is less than about 1.4 times the mass of the Sun, then it becomes a white dwarf. If it’s more than about 1.4 times the mass of the Sun, then it becomes a neutron star or black hole (discussed in Chapter 13 ). Figure 12.3 Web18 Sep 2024 · White dwarfs are dead stars. A single white dwarf contains roughly the mass of our sun in a volume no bigger than our planet. Our sun will become a white dwarf …
The life cycle of a Sun-like star (annotated)
http://www.thestargarden.co.uk/Red-giants-and-white-dwarfs.html Web7 May 2015 · A star like our Sun will become a white dwarf when it has exhausted its nuclear fuel. Near the end of its nuclear burning stage, such a star expels most of its outer material (creating a planetary nebula) until only the hot (T > 100,000 K) core remains, which then settles down to become a young white dwarf. goalkeeper gloves clipart
What are white dwarf stars? Astronomy Essentials EarthSky
Web20 Mar 2009 · What is left behind is a white dwarf where the Sun used to be and the outer planets are orbiting at an expanded distance from the Sun. Like now, Jupiter will still wield … WebCores of less than 1.4 solar masses become white dwarfs (see below), which slowly cool to become black dwarfs. When the Sun becomes a white dwarf, it will be compressed to the size of the Earth and have about 60% of its mass. Can you see Sirius A's tiny white dwarf companion, Sirius B? (lower left) Web13 Apr 2024 · After it shrinks to the size of the Earth, it will become a white dwarf star. The Sun may throw off huge amounts of gases in violent eruptions called nova explosions as it changes from a red giant to a white dwarf. After billions of years as a white dwarf, the Sun will have used up all its fuel and will have lost its heat. goalkeeper gloves factory