Steve Hentges
No, it’s too small for that! The Sun would need to be about 20 times more massive to end its life as a black hole. Stars that are born this size or larger can explode into a supernova at the end of their lifetimes before collapsing back into a black hole, an object with a grav...
What are dead stars called? Bottom line:White dwarfsare the remnants of dead stars. They are the dense stellar cores left behind after a star has exhausted its fuel supply and blown its gases into space. What does a dying star sound like? “You can think of it as hearing the star scre...
Why do supergiant stars, such as Betelgeuse, have high luminosity? Why is a star called a star? Why are spiral galaxies so bright? Why are there no stars on pictures of the man on the moon? Why are colors produced in planetary nebulae?
beyond the energy carried off in neutrinos, and that it was a so-called ultra-stripped supernova. Such supernovae would be very sub-luminous, and usually invisible if too far from the Sun. This rare find provided a new insight into how stars explode, and the neutron stars they leave ...
Why is deuterium called heavy hydrogen? When deuterium and tritium fuse together to form an atom of helium, a neutron, and a bunch of energy, why does most of the energy go with the neutron? Why is uranium-235 used instead of uranium-238 in nuclear reactors?
3) Some stars are unbelievably huge. The largest stars are called red hypergiants. One absurdly large one is called VY Canis Majoris. If you stacked 1,420 of our suns on top of each other, you’d have the diameter of VY Canis Majoris. Here’s what it looks like next to the sun: ...
We now know that stars are fueled by nuclear fusion. Each time fusion takes place, energy is released as a by-product. This energy, expelled into space, is what we see as starlight. The fusion process begins when two hydrogen nuclei smash together to form a particle called the deuteron ...
They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes. On Earth, gamma waves are generated bynuclear explosions, lightning, and the less dramatic activity of radioactive decay. ...
There is no exact evidence: the magnetic field is strong interaction in nuclei macroscopic manifestations of another force on; but by this logic the same neutron stars, black holes could explain why the universe has super strong magnetic fields cause. ...