A simulation of a 3-solar-mass star shows the central, convective core and the waves it generates in the rest of the star’s interior. Credit: Philipp Edelmann Astronomers commonly refer to massive stars as the chemical factories of the Universe. They generally end their lives in spectacular supernovae, events that forge […]

An artist’s impression of a flare from Proxima Centauri, modeled after the loops of glowing hot gas seen in the largest solar flares. An artist’s impression of the exoplanet Proxima b is shown in the foreground. Credit: Roberto Molar Candanosa / Carnegie Institution for Science, NASA/SDO, NASA/JPL Discovery a ‘coup’ […]

Unprecedented high-resolution map of the Orion Nebula Cluster showing newborn stars (orange squares), gravitationally collapsing gas cores (red circles), and non-collapsing gas cores (blue crosses). Credit: Takemura et al. A survey of star formation activity in the Orion Nebula Cluster found similar mass distributions for newborn stars and dense gas […]

Neutrinos are notoriously finicky particles.  Hundreds of trillions pass through a person’s body every second, yet they hardly seem to interact with anything (though they actually do a lot).  Even more hard to find are the “high energy” neutrinos that are believed to be formed as the outcome of some of the most violent […]

This is the compass image for VY Canis Majoris, showing the orientation and filters used. Credit: NASA, ESA, and R. Humphreys (University of Minnesota), and J. Olmsted (STScI) The red hypergiant VY Canis Majoris is enshrouded in huge clouds of dust Stars come in an extraordinary range of sizes. One […]

Remnants of planetary crust disintegrating under the tidal forces around a cool white dwarf. Material in the disc becomes vapourised close to the central star and flows onto the white dwarf atmosphere. Credit: University of Warwick/Mark Garlick Remnants of planets with Earth-like crusts have been discovered in the atmospheres of […]

This graphic illustrates how the southern region of the rapidly evolving, bright, red supergiant star Betelgeuse may have suddenly become fainter for several months during late 2019 and early 2020. Illustration credit: NASA, ESA, and E. Wheatley (STScI)   ANIMATION Recalibrated Betelgeuse’s mass, radius, and distance. Betelgeuse is normally one of […]

This artist’s impression of ID2299 shows the galaxy, the product of a galactic collision, and some of its gas being ejected by a “tidal tail” as a result of the merger. New observations made with ALMA, in which ESO is a partner, have captured the earliest stages of this ejection, […]

An image of the nearby Pleiades star cluster. CfA astronomer Guillermo Torres has completed a detailed eleven-year study of intermediate mass stars in this cluster using SAO’s Fred L. Whipple Observatory Tillinghast facility. Because these stars are rapidly rotating, previous spectroscopic measurements of their motions and properties had been unreliable. […]