A team of astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA), of which the U.S. National Science Foundation National Radio Astronomy Observatory is a partner, has captured a massive stream of gas—one trillion miles, or .2 light years long—feeding the young triple-star system GW Orionis. These new observations provide the clearest evidence yet for how such “streamers” can tilt and twist the disks where planets are born.

Astronomers studying a rare stellar explosion first spotted as a brief burst of X-rays used radio observations to help show that the dying star did not produce the powerful jet often associated with gamma-ray bursts.

The U.S. National Science Foundation (NSF), the NSF National Radio Astronomy Observatory (NSF NRAO), and the U.S. Naval Observatory (USNO) are advancing a new collaboration to support the future of high-resolution radio astronomy and astrometry, with the development of a pathfinder instrument for the proposed Next Generation Very Large Array (ngVLA).

Astronomers have made a series of landmark observations of one of the Universe’s most violent events. Using the U.S….

The U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) has completed observations for the Very Large Array Sky Survey (VLASS), the most detailed radio survey of the sky ever conducted, providing an unprecedented view of the dynamic radio universe.

A team of astronomers led by Juan D. Soler of the University of Vienna used the NSF VLA, operated by the U.S. National Science Foundation’s National Radio Astronomy Observatories (NSF NRAO), to obtain high-resolution observations of the emission from neutral hydrogen atoms (HI) at 21 centimeters wavelength