What kind of stars are mostly present in space?

Since there are so many stars in the universe, the IAU uses a different system for newfound stars. Most consist of an abbreviation that stands for either the type of star or a catalog that lists information about the star, followed by a group of symbols. For instance, PSR J1302-6350 is a pulsar, thus the PSR. read more

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. read more

Well, not exactly. In truth, stars are about as diverse as anything else in our Universe, falling into one of many different classifications based on its defining characteristics. All in all, there are many different types of stars, ranging from tiny brown dwarfs to red and blue supergiants. read more

Scientists who study interstellar space use spectrometers to identify trace amounts of other molecules between the stars. For instance, in 2012, NASA detected two new types of molecules in a region of space about 400 light years from Earth. read more