| 
   Name  | 
  
   Name
  Before Launch  | 
  
   Spectral
  Region  | 
  
   Year
  Launched  | 
  
   End-of-Life  | 
  
   Comments  | 
  
   Follow-On
    | 
						W | 
					
| 
   Hubble Space
  Telescope, HST  | 
  
   Large Space Telescope, LST  | 
  
   Visible, UV, and Near-IR   | 
  
   1990  | 
  
   —  | 
  
   Launched and serviced by Space Shuttle.  | 
  
   James Webb Space Telescope, JWST (IR and visible)  | 
						Hubble Homepage | 
| 
   | 
  
   Gamma Ray Observatory, GRO  | 
  
   Gamma Ray  | 
  
   1991  | 
  
   2000  | 
  
   Shuttle-launched  | 
  
   Fermi Gamma-Ray Space Telescope, formerly Gamma-Ray Large Area Space
  Telescope, GLAST  | 
						NASA | 
| 
   Chandra X-Ray
  Observatory, CXO  | 
  
   Advanced X-Ray Astro-physics Facility, AXAF  | 
  
   X-Ray  | 
  
   1999  | 
  
   —  | 
  
   Shuttle-launched; extended delays due to cost of HST  | 
  
   Constellation-X provides greater sensitivity, but lower resolution  | 
						NASA | 
| 
   Spitzer Space
  Telescope, SST  | 
  
   Space Infrared Tele-scope Facility, SIRTF  | 
  
   Infrared  | 
  
   2003  | 
  
   —  | 
  
   Launched on Delta II  | 
  
   JWST observations will re-place SST in the near infrared  | 
						Spitzer Homepage |