Satellite Observing Black Holes

dragoness.ai writes: "If you have ever wondered how we get all the info on the million light-years away black holes, neutron stars, pulsars...then you should find out more about the Rossi X-ray Timing Explorer and its mission."

What about Chandra?

[Man of E]

RXTE is a pretty old satellite. From the page, I see it has given great results and continues to do so. That's pretty neat.
Still, I recently read about another x-ray satellite out there that's newer and likely to be still more important for future x-ray imaging. Chandra observatory was launched by NASA not long ago. You can get more information at chandra.harvard.edu [harvard.edu].
Feel free to check out both pages and see the differences between RXTE and Chandra.