Three powerful space telescopes, Euclid, Roman, and the James Webb Space Telescope, could team up to detect black holes as early as 250 million years after the Big Bang.
How the James Webb, Euclid and Roman space telescopes could team up to hunt supermassive black holes from the dawn of time
Source: space
Source Link: https://www.space.com/astronomy/how-the-james-webb-euclid-and-roman-space-telescopes-could-team-up-to-hunt-supermassive-black-holes-from-the-dawn-of-time