Astronomers have discovered a type of stellar nova called a “micronova”. Although they release a fraction of the energy emitted by supernovas, micronovae can still burn through ten quadrillion tons of stellar mass in a single eruption. “We have discovered and identified for the first time what we are calling
Researchers studying images of the distant star N6946-BH1 were shocked to find that the otherwise extremely bright star had outright disappeared. The star was still visible in images taken by the Hubble Space Telescope as recently as 2009, but in images taken in 2015, it was barely a faint glow when viewed in infrared, and not visible at all in the visible spectrum.
In a first for astronomy, a distant supernova has been observed that was previously predicted to appear, has been imaged by a team of astronomers from the University of South Carolina, using the Hubble Space Telescope. The prediction utilized the effect of gravitational lensing, where the gravity of a massive object will bend light from a source behind it around itself, as if it were an optical lens.
When stars explode they become brilliant supernova for a short time, then they may undergo a sudden gravitational collapse into a neutron star or black hole, Astronomers are trying to catch glimpses of this happening, in case it happens to us in the future (In 2012? NOTE: Subscribers can still listen to this show).