. "Chandra space telescope" . "''Chandra'' satellite" . . "Chandra X-ray Center" . . "Chandra X-ray telescope" . . . . "Chandra X-Ray" . "Chandra" . "CXO" . "Advanced X-ray Astrophysics Facility" . "''Chandra'' observatory" . "Chandra observatory" . . "Chandra X-ray space telescope" . "Chandra Observatory" . . "Chandra X-ray Observatory" . . "Chandra X-ray Observatories" . . "Chandra Space Telescope" . . . "Chandra X-ray Observatory" . "Chandra Fellow" . . . . . . . . "CXOU" . . . . . . . "25867" . . . . "1999-07-23" . "Chandra X-ray" . . . "Advanced X-Ray Astrophysics Facility" . "Chandra X-Ray Observatory" . "1999-040B" . . . . . . "1.57788E8" . . "ACIS" . . . . . "Chandra X-ray Obs." . "Advanced X-ray Astrophysics Facility (AXAF)" . "AXAF" . "CHANDRA" .