There are several space telescopes now in orbit, but the Hubble Space Telescope is the only one in a 90-minute orbit. This low orbit was selected so that it would remain reachable by the Space Shuttle. The original plan, when Hubble was launched, was that one of the later Shuttle missions would pick up the Hubble at the end of its service life and return it to Earth, possibly to be placed in the Smithsonian museum.
Unfortunately, the Shuttle program is ending early, and with the last maintenance mission, the Hubble can remain in service for several more years. So there will be no way to retrieve Hubble and return it to Earth. It will probably be de-orbited and crashed into the ocean by about 2018.
Fortunately, other more powerful space telescopes are being prepared for launch now, and some, like the Spitzer Space Telescope, are already in space.
NASA's most famous telescope is probably the Hubble Telescope that orbits the earth.
He was famous for improving the telescope and for believing that the earth was not the center of the solar system, but that the sun is.
96 to 97 minutes.
The Hubble Space Telescope orbits the Earth every 97 minutes at an altitude of about 547 kilometers. It travels at a speed of over 27,000 kilometers per hour, allowing it to observe different parts of the sky continuously.
The telescope in orbit around the earth as of 2010 is the Hubble Telescope.
It is not an observatory, it simply is an instrument (= a telescope) flying in space, orbiting Earth once in 97 minutes. It is operated from the ground and the "observatory facilities" are on the ground.
The Hubble Space Telescope is a space-based observatory launched by NASA in 1990. It orbits Earth and captures high-resolution images of celestial objects in visible, ultraviolet, and infrared light. Hubble has greatly contributed to our understanding of the universe and made countless scientific discoveries.
Arecibo Radio Telescope is in Puerto Rico at 18 degrees 20 minutes north, 66 degrees 45 minutes west. It's plainly visible on Google Earth, for example.
The Hubble Space Telescope orbits Earth at a speed of about 17,000 miles per hour (27,000 km/h). At this speed, it completes an orbit around Earth approximately every 97 minutes.
HST orbits the Earth every 97 minutes at an orbital altitude of 347 miles.
The Hubble Space Telescope orbits approximately 547 kilometers (340 miles) above the surface of the Earth. It travels at a speed of about 27,000 kilometers per hour (17,000 miles per hour), completing a full orbit around the Earth roughly every 97 minutes.
The Hubble Space Telescope is gravitationally bound to the world but is nowhere in the world. It is orbiting the earth in a nearly circular path 240 miles above the surface, completing one revolution every 100 minutes or so. I don't know the inclination of its path to the equator.