Cas A TimelineAXAF Proposal In 1976 astronomers proposed a large, powerful orbiting X-ray telescope to NASA called AXAF. More Info: AXAF Close Window | Next Space Event |
Cas A TimelineAXAF ProposalIn 1976 astronomers proposed a large, powerful orbiting X-ray telescope to NASA called AXAF. More Info: AXAF Close Window | Next Space Event |