NASAのインスタグラム(nasa) - 4月11日 07時40分

This seemingly endless winter has brought many intense and powerful storms, with cold fronts sweeping across much of the United States. On a much grander scale, astronomers have discovered enormous cosmic “weather systems” that are millions of light years in extent.

A gigantic and resilient "cold front" hurtling through the Perseus galaxy cluster has been studied using data from our Chandra X-ray Observatory (@nasachandraxray). This cosmic weather system spans about two million light years and has been traveling for over 5 billion years, longer than the existence of our Solar System.

This graphic shows the cold front in the Perseus cluster. The cold front is the long vertical structure on the left side of the image. It is about two million light years long and has traveled away from the center of the cluster at about 300,000 miles per hour.

Credits: X-ray: NASA/CXC/GSFC/S. Walker, ESA/XMM, ROSAT
#chandra #spitzer #telescope #astronomy #xray #space #weather #nasa #astronomy #science #perseus #galaxy #cluster #coldfront #picoftheday #pictureoftheday

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