Far, far away: Just how distant is that galaxy?

In December 2022, astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) confirmed the discovery of one of the most distant galaxies ever observed. The faint radio light ALMA captured began its journey ...

The chaotic cores of Perseus protostars

The formation of a star has a simple tale. A region of interstellar gas collapses under its own weight, eventually forming a dense protostar surrounded by a disk of gas and dust. The protostar and the disk rotate in the same ...

A true view of infant star clusters

Super star clusters (SSCs) are dense clusters of bright young stars. As they evolve their intense radiation can clear gas and dust from their region. But as they are forming the region around them is still undisturbed. Because ...

Hydrogen masers reveal new secrets of a massive star

While using the Atacama Large Millimeter/submillimeter Array (ALMA) to study the masers around oddball star MWC 349A scientists discovered something unexpected: a previously unseen jet of material launching from the star's ...

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