Star Trek: Discovery is part of CBS All Access launch.
Stars range in size from neutron stars, which vary anywhere from 20 to 40 km (25 mi) in diameter, to supergiants like Betelgeuse in the Orion constellation, which has a diameter about 1,000 times that of the Sun with a much lower density
 Near the end of the star's life, fusion continues along a series of onion-layer shells within a massive star

