What are all the space telescopes we got floatin' around up there now? I can think of at least five.?

Question

That we know...

Answer 1

HST, GLAST, SOHO, Spitzer, XMM Newton, Chandra X-ray, Swift, Hinode, STEREO.

But many of the other missions have pretty good cameras.  Voyagers I & II, MRO, Spirit, Opportunity (which has imaged the Earth and Moon), Cassini,  Mariner 4, 9 & 10, Pioneer 10 & 11, Deep Space I, Deep Impact's continuing mission, WMAP.

There are probably others.

Answer 2

There are many of them.  If you just want to count the ones in earth orbit, pointing outward, there's:

1)  The Hubble Space Telscope-  Works in visible, near infrared, and near ultraviolet light.  

2) The Spitzer Space Telescope - Infrared

3) GALEX - the "GALaxy  Evolution eXplorer"  Ultraviolet

4) Chandra - XRay telescope

5) GLAST- Gamma ray telescope (not yet fully operational, just launched last June)

6) Gamma- A russian Gamma ray satellite

7) WMAP - "Wilkenson Microwave Anisotropy Probe" - studies the comsic background radiation, microwaves

8) SOHO - SOlar and Heliospheric Observatory - stares at the sun all day.

Facing the other way, towards us, are:

1) Landsats  5, 6, and 7

2) Various NOAA weather satellites

3) GeoEye - Company sells high resolution satellite images like those seen in "Google Earth" - but to Yahoo and Microsoft.

4) Ikonos- Another hi-res commercial satellite system.  

5) FORMOSAT- Chinese high-res satellite.

If you want to count telescopes on Space probes, the following missions are still functioning:

1) Cassini-  Orbiting Saturn

2) Mars Reconnaissance Orbiter-  Orbiting Mars (biggest orbiting telescope not near Earth)

3) New Horizons-  On its way to Pluto-Charon

4) Messenger- Will settle into orbit around Mercury

5) Dawn- on its way to visit two asteroids

6) Deep Impact- Already accomplished its primary mission of smashing a probe into comet Tempel1, but is being redirected to new targets

7) CONTOUR - COmet Nucleus TOUR- will visit three different comets

8) Mars Express - European Mars Orbiter

9) Venus Express - Eurpean, Due to Orbit Venus

That's all I can think of now.

Answer 3

That we know, or that secret military ones?