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4 light years
Alpha Centauri is 4.365 light-years from the Sun. One light-year is 9.46*1012 kilometers. So: 4.365*9.46*1012= 4.13*1013 kilometers
No. Alpha particles are helium nuclei; such nuclei have a mass, and can therefore NOT travel at the speed of light.
Which star do you mean? Sol, commonly called the Sun is 93 million miles away from earth. The next nearest, Proxima Centauri in the Alpha Centuri system is 4.2 light years away.
Toliman (Alpha Centauri) is at a distance of 4.3 light-years. That means it would take a ray of light 4.3 years to travel from here to Toliman, or from Toliman to here.
saturn, venus, proxima centuri
4.3 light years===========================Sorry. "Light year" is an answer to "how far", not "how long".Alpha Centauri is about 4.4 light years away from our solar system and everything in it,which means that it takes AC's light about 4.3 years to get here.
4.25 years, because it is 4.25 light years away.
alpha and beta radiations do not travel at the speed of light,but gamma rays and the rest of em spectrum rays do.
Alpha radiation, like any other form of electromagnetic radiation, travels at the speed of light (300 000 000 metres per second)
Alpha Centauri is a triple star system. Alpha Centauri A, B & C or Proxima Centauri. Alpha Centauri A & B are 4.37 light years from the Earth whereas Alpha Centauri C is 4.243 light years.
4.2 light-years or 39,735,000,000,000 kilometers (39.735 trillion km).