What are some chemical properties of einsteinium? What element is a neutron star made of? Which element is most abundant in the Earth's lithosphere? What are two metals found in the outer core of Earth? What elements make up fats?
The heaviest known neutron star has a mass equivalent to around 2.5 times the mass of the sun, while the lightest known black hole has a mass of around 5 times that of the sun. Thus there is a mass gap between these two types of dead stars which scientists are currently attempting to ...
835 times more massive than an electron. Atoms always have an equal number of protons and electrons, and the number of protons and neutrons is usually the same as well. Adding a proton to an atom makes a new element, while adding a neutron makes an isotope, or heavier version, of that...
Pulsars are 'cosmic lighthouses' that when seen from Earth appear to be flickering stars, but actually consist of exotic stellar remnants called neutron stars.
Before a massive star experiences its supernova death, it briefly becomes a Wolf-Rayet star and can outshine the sun millions of times over.
Emission Nebulae are those that emit radiation from ionized gas and are often called HII regions because they are largely composed of ionized hydrogen. The Orion Nebula is an emission nebula and star-forming region. Not only is it thebrightest nebulain our sky, but it is also the most active...
Beta decay: A neutron becomes a proton, an electron and an antineutrino. The ejected electron is a beta particle. Spontaneous fission: A nucleus splits into two pieces. In the process, it can eject neutrons, which can become neutron rays. The nucleus can also emit a burst of electromagnetic...
Composed of empty space, vacuum energy is believed to be a key driver of accelerated expansion in the universe. Since vacuum energy density is so similar in nature, it's often interchangeably called dark energy. Another theory, which has been partially disproven, defines dark energy as a new ...
stars. Our Sun is a main sequence star, and so are our nearest neighbors, Sirius and Alpha Centauri A. Main sequence stars can vary in size, mass and brightness, but they’re all doing the same thing: converting hydrogen into helium in their cores, releasing a tremendous amount of energy...
baryonic matter, consists of baryons — an overarching name for subatomic particles such asprotons, neutrons and electrons. Scientists only speculate what dark matter is made of. It could be composed of baryons but it could also be non-baryonic, which means consisting of different types of ...