Galaxy Facts A galaxy is a massive, gravitationally bound system that consists of stars, stellar objects (such as brown dwarfs and neutron stars), nebulae, an interstellar medium of gas and dust,black holes, and an unknown component of dark matter. Examples of galaxies range from dwarfs with ...
Vega is only about 400 million years old – which is fairly young. It is an A-type star and has about twice the mass of the Sun. It will not live as long as the Sun does because Vega will exhaust its nuclear fuel much sooner. Betelgeuse (αOrionis) People often ask which stars wi...
Read:All Interesting Facts About Black Holes and White Holes 3.The red supergiantUY Scuti,located at the distance of 9,500 light years in constellation Scutum in the Milky Way galaxy, is currently the biggest known star to humans in the distant universe. Compared to the Sun, it has 1,700...
Tritium emits beta particles (electrons), transforming to stable helium-3 (2 protons + 1 neutron) in the process.Radium, now, is an alpha emitter, transforming to the very-short-lived (~3 days) alpha emitter radon, on its way to eventual stability as an isotope of lead or bismuth.The ...
The universe is more than 13.7 billion years old and it is home to billions of galaxies. No one is quite sure exactly how many galaxies there are all told, but some of the facts we do know are pretty impressive. How do we know what we know about galaxies? Astronomers study the light...
Locke said: “However, to date we have found no evidence whatsoever that life is even possible on any other planet besides Earth. Possibilities, yes, but evidence and facts – no.” I disagree. We know quite a bit about the environment on Mars, and we know some about Europa too, that...
Neutron radiation is the one to worry about if acquiring radioactivity is your concern; the balance of neutrons in an atom’s nucleus is the factor that determines radioactivity. Too many or too few neutrons will render an atom radioactive. For example, carbon is stable with 6 or 7 neutrons...
Sometimes a hypothesis which challenges convention can be alluring, particularly when it could plausibly fit most of the facts. But all of the evidence presented by Illig and his group (mostly written in German) is circumstantial at best. Their hypothesis does raise some interesting questions and ...
ConcernedCitizen said: “@Bryan: apparently this isomer was “discovered in the 1970s, created inadvertently by neutron irradiation of a nuclear reactor’s Hf cladding.” wouldn’t that suggest that the ordinary hafnium is “absorbing” the neutron radiation as energy? note: IANAP (i am not ...