Red supergiant Betelgeuse not so bright, not so giant, not so far away
Best ever image of another star’s surface and atmosphere
Using ESO’s Very Large Telescope Interferometer astronomers have constructed the most detailed image ever of a star — the red supergiant star Antares. They have also made the first map of the velocities of material in the atmosphere of a star other than the Sun, revealing unexpected turbulence in Antares’s huge extended atmosphere.
Astronomers glimpse supernova shockwave for the first time
Astronomers have captured the earliest minutes of two exploding stars and for the first time seen a shockwave generated by a star’s collapsing core. The international team found a shockwave only in the smaller supernova — a finding that will help them understand these complex explosions that create many of the elements that make up the Earth and solar system.