‘Like Night Flying in an Airplane’: 25 Years Since STS-35 (Part 1)

But for the tragic loss of Challenger, the ASTRO-1 mission might have flown just five weeks later, in March 1986. As circumstances transpired, it would be more than four years before the mission rose into orbit. Photo Credit: NASA, via Joachim Becker/SpaceFacts.de

A quarter-century ago, this week, four powerful ultraviolet and X-ray “eyes” peered [...]