Russia launches X-ray telescope to find 'millions' of black holes
 

Russia is back in the business of space observation after losing control of a radio telescope a the start of 2019. The country has successfully launched Spektr-RG, an X-ray telescope co-developed with Germany's help. The vessel will take 100 days t...

https://www.engadget.com/2019/07/13/...ray-telescope/