Portal:Radiation astronomy/Pictures/28
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/b2/Chamaeleon_I_cloud.png/400px-Chamaeleon_I_cloud.png)
This is a ROSAT false-color image in X-rays between 500 eV and 1.1 keV of the Chamaeleon I dark cloud. The contours are 100 µm emission from dust measured by the IRAS satellite. Credit: D Burrows, J Mendenhall, and E Feigelson Penn State University using the US/German ROSAT satellite.