Can you name this satellite? In December, NASA’s third Great Observatory is planned for launch. The two NASA Great Observatories currently in orbit are the Hubble Space Telescope [ http://antwrp.gsfc.…] and the Compton Gamma-Ray Observatory [ http://antwrp.gsfc.…], both now named for famous [ http://antwrp.gsfc.…] scientists [ http://cossc.gsfc.n…]. But after whom should the Advanced X-ray Astrophysics Facility [ http://www.trw.com/…] (AXAF) be named? If your submitted suggestion conforms with contest rules [ http://asc.harvard.…] and is chosen, you will have named the most powerful X-ray satellite ever built, and may even win a prize. AXAF [ http://snail.msfc.n…] is the size of a bus, has strange mirrors [ http://xrtpub.harva…] polished to atomic smoothness, and will produce X-ray [ http://xrtpub.harva…] images five times clearer of objects twice as faint as any previous X-ray satellite. This should allow AXAF [ http://xrtpub.harva…] the ability to see X-rays [ http://xrtpub.harva…] emitted near small black holes [ http://antwrp.gsfc.…], from distant active galaxies [ http://antwrp.gsfc.…], and inside huge clusters of galaxies [ http://antwrp.gsfc.…]. Astronomers now hope for an uneventful launch, routine operations, and spectacular discoveries.