A planetary nebula is an expanding cloud of gas ejected from a star that is nearing the end of its life. 行星状星云一个由来自中心濒临死亡恒星所释放出的气体组成的正在膨胀的星云。 cdn.astronomy.com.cn 8. Officially known as PN G75. 5+1. 7, the Soap Bubble is an example of a planetar...
An Emissions Nebula produces its light, whereas a Reflection Nebula glows because of light from a source outside the Nebula. Solar System Nebula Theory It is theorized that theSolar Systemwas created from a nebula billions of years ago. TheUniverseis 13.8 billion years old, and the generally ...
A planetary nebula within a clusterNASA
NGC 2438 is a planetary nebula, formed after the death of a Sun-like star. The medium-sized star would have expelled its outer layers of gas into space as it died, leaving behind a white-dwarf core. A halo of glowing gas over 4.5 light-years across surrounds the nebula’s brighter inn...
periodic table. When fusing gets to Iron, it cannot transform anymore and, as such, dies, first growing into a supergiant and then becoming aPlanetary Nebulaor if it was massive enough gosupernova, leaving behind a supernova remnant likeCrab Nebula. Our Sun will become a planetary nebula. ...
Another type of diffuse nebula, a reflection nebula doesn’t emit its own light, but scatters light from embedded stars. (Image credit: NASA, JPL-Caltech, Kate Su (Steward Obs, U. Arizona) et al.) Planetary nebula: The Helix Nebula This is composed of expanding gas that was blown off...
Betelgeuse is profusely losing mass due to a powerful solar wind and there will be shells of gas and dust moving away from the star similar to a planetary nebula, but there is no super hot remnant white dwarf or neutron star present in the center to light it up. So we don’t see ...
The PuWe 1 Planetary Nebula PuWe 1 is one of the most difficult-to-image planetary nebulae. Its apparent size is comparable to the size of the full Moon and its gaseous material is far away from the progenitor star, so it glows very faintly. This picture is the result of 112 hours ...
Another type of diffuse nebula, a reflection nebula doesn’t emit its own light, but scatters light from embedded stars. (Image credit: NASA, JPL-Caltech, Kate Su (Steward Obs, U. Arizona) et al.) Planetary nebula: The Helix Nebula This is composed of expanding gas that was blown off...
Just like a planetary nebula, the cause of it is when a star runs out of nuclear fuel. From the massive star’s lack of outward pressure to balance its inward gravity, the star collapses into the core expelling a nuclear explosion. Also like the nebula, gas and dusts are scattered ...