Planck & clusters: SO cool

Here is a new story I just wrote for ESA about my favourite satellite, Planck, and its newest observations of big, huge, beautiful galaxy clusters... enjoy :-)

Planck's first glimpse at galaxy clusters and a new supercluster

Surveying the microwave sky, Planck has obtained its very first images of galaxy clusters, amongst the largest objects in the Universe, by means of the Sunyaev-Zel'dovich effect, a characteristic signature they imprint on the Cosmic Microwave Background. Joining forces in a fruitful collaboration between ESA missions, XMM-Newton followed up Planck's detections and revealed that one of them is a previously unknown supercluster of galaxies. More...

Image Credits: ESA/ LFI & HFI Consortia