Exotic Objects Why do we see a flash instead of a constant signal from a millisecond pulsar, which spins 20-700 times per second? Is that not fast enough to maintain a steady beam of light?
Exotic Objects, Stars A recent study found that a type Ia supernova’s original star could be anywhere from 0.9 to 1.4 times our Sun’s mass. Astronomers use these blasts’ brightnesses to estimate distances, so are those measurements now incorrect?
Science Nuclear fusion of hydrogen into helium powers stars, but fusion requires a lot of energy. Where does this energy come from?
