Astronomers using the National Science Foundation's Very Large Array (VLA) have found a long-sought 'missing link' between supernova explosions that generate gamma-ray bursts (GRBs) and those that don't. The scientists found that a stellar explosion seen in 2012 has many characteristics expected of one that generates a powerful burst of gamma rays, yet no such burst occurred.
Associated Universities, Inc. (AUI), and the National Radio Astronomy Observatory (NRAO) have awarded the 2015 Karl G. Jansky Lectureship to Dr. Nick Z. Scoville of the California Institute of Technology (Caltech).
A pair of images of a young star, made 18 years apart, has revealed a dramatic difference that is providing astronomers with a unique, 'real-time' look at how massive stars develop in the earliest stages of their formation.
Researchers using the Karl G. Jansky Very Large Array (VLA) have produced the most detailed image yet of a fascinating region where clusters of hundreds of galaxies are colliding, creating a rich variety of mysterious phenomena visible only to radio telescopes.
For the first time, astronomers have caught a multiple-star system in the beginning stages of its formation, and their direct observations of this process give strong support to one of several suggested pathways to producing such systems.
Astronomers using the National Science Foundation's Very Large Array (VLA) found surprisingly energetic activity in what they otherwise considered a 'boring' galaxy, and their discovery provides important insight on how supermassive black holes can have a catastrophic effect on the galaxies in which they reside.
Scientists have used the National Science Foundation's Very Long Baseline Array (VLBA) radio-telescope system and NASA's Cassini spacecraft to measure the position of Saturn and its family of moons to within about a mile -- at a range of nearly a billion miles.