Neutron star nebula. Credit: NASA/CXC/SAO: X-ray; NASA/JPL-Caltech: Infrared Most massive stars are born in binaries (and sometimes triples, quadruples, and so on—being single isn’t common for such rock stars!) As stars age, they grow larger in size, and not just a little thickening of the waistline, but a hundred-fold or […]

Credit: NASA/CXC/M. Weiss Astronomers have reported the first detection of X-rays from the earliest phase of evolution of a star like our Sun. This discovery from NASA’s Chandra X-ray Observatory may help answer questions about the Sun and Solar System as they are today. The X-ray flare came from the young […]

Astronomers using ESO telescopes have discovered giant spots on the surface of extremely hot stars hidden in stellar clusters, called extreme horizontal branch stars. This image shows an artist’s impression of what one of these stars, and its giant whitish spot, might look like. The spot is bright, takes up […]

Delta Scuti star Astronomers have detected elusive pulsation patterns in dozens of young, rapidly rotating stars thanks to data from NASA’s Transiting Exoplanet Survey Satellite (TESS). The discovery will revolutionize scientists’ ability to study details like the ages, sizes and compositions of these stars — all members of a class named for […]