https://www.facebook.com/athena.xray.observatory/photos/a.477473755713245.1073741827.406558382804783/1075128049281143/?type=3 - Cherenkov Telescope Array

https://www.facebook.com/athena.xray.observatory/photos/a. 477473755713245.1073741827.406558382804783/1075128049281143/?type =3. For the latest ...

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