A discussion of the progression of astrophysicists' understanding of supernovas is presented, beginning with the first use of the term "supernova" in 1933 by Walter Baade and Fritz Zwicky. The article details the role that sound waves play in core-collapse explosions, which create either super...
When the Hubble Space Telescope was being built, astronomers realized that to properly point it they needed a very accurate list of star positions and brightnesses, so the Guide Star Catalog was created, which currently includes nearly a billion stars. These are observed by special sensors on Hu...
Planetary nebulae are a type of supernova remnant formed when Sun-like stars first swell up to enormous sizes and then explode. When it happens to the Sun, its mantle will be flung outward to form a planetary nebula, while its core will linger on as a white dwarf....
they called me john they came back dazed they came out screami they can all get fked they can all get fxxk they cant take that a they carry their own they come to observe they continued walkin they could explode they create inflation they deem me mad they demand all they deserved it ...
As I am in primary school now,I have class from Monday to Friday,so I am busy with my study,I don’t have much time to play.My life after class is enriched,one the one hand,I need to finish my homework,this is the first thing I need to do,only when I finish my homework,will...
A black hole exerts (施加) a strong gravitational (重力的) pull and yet it has no matter. It is only space—or so we think . How can this happen? The theory is that some stars explode when their density increases to a particular point; they ''collapse'' and sometimes a supernova (...
constellation ofSerpensis an example of where stars are being formed. The process of a fully-fledged star system will take many millions or even billions of years before it becomes a solar system like ours. Diffuse Nebulae are called HII because they consist of highly ionized hydrogen. Ref:...
Today, it's known that the long-term fate of a star depends on whether its mass is above or below a boundary called the Chandrasekhar limit. Stars of less than eight solar masses (M☉) or so are thought to end their lives as a long-lived stellar ember called a white dwarf star. Ab...
2. Black holes come from stars that are made of hydrogen, other gases and a few metals. When these explode it can turn into a stellar-mass (恒星质量) black hole, which can only occur if the star is large enough ( should be bigger than the sun ) for the explosion to break it into...
And, if successful, it'll mean Musk is one small step closer to realizing his personal dream of building a city on Mars. The billionaire business magnate has oversold timelines in the past. Here's what we know so far about when SpaceX will try to fly this. SEE ALSO: Check out NASA'...