Baby Photos of a Galaxy Cluster

Baby Photos of a Galaxy Cluster

While ClJ1446 is smaller and less massive than most present-day clusters, it is probably very similar to what they looked like 10 billion years ago. Therefore, this work can help improve our understanding of how our nearby galaxy clusters likely evolved.

Observing an Exo-Kuiper Belt

Observing an Exo-Kuiper Belt

The authors of today’s paper wanted to use the best available instruments to image HR 8799’s outer debris disk, and look for whether “planet b” appears to have cleared out the disk, in the same way Neptune did for the Kuiper Belt.