Visible
Further information: Visible-light astronomyThe oldest form of astronomy, optical or visible-light astronomy extends from approximately 400 to 700 nm. Positioning an optical telescope in space means that the telescope does not see any atmospheric effects (see astronomical seeing), providing higher resolution images. Optical telescopes are used to look at stars, galaxies, planetary nebulae and protoplanetary disks, amongst many other things.
-
The Hubble Space Telescope
-
The Kepler Spacecraft Mission
| Name | Space Agency | Launch Date | Terminated | Location | Ref(s) |
|---|---|---|---|---|---|
| COROT | CNES & ESA | 27 December 2006 | — | Earth orbit (872–884 km) | |
| Hipparcos | ESA | 8 August 1989 | March 1993 | Earth orbit (223–35,632 km) | |
| Hubble Space Telescope | NASA | 24 April 1990 | — | Earth orbit (586.47–610.44 km) | |
| Kepler Mission | NASA | 6 March 2009 | — | Earth-trailing heliocentric orbit | |
| MOST | CSA | 30 June 2003 | — | Earth orbit (819–832 km) | |
| Swift Gamma Ray Burst Explorer | NASA | 20 November 2004 | — | Earth orbit (585–604 km) |
Read more about this topic: List Of Space Telescopes
Famous quotes containing the word visible:
“Make visible what, without you, might perhaps never have been seen.”
—Robert Bresson (b. 1907)
“As the truest society approaches always nearer to solitude, so the most excellent speech finally falls into Silence. Silence is audible to all men, at all times, and in all places. She is when we hear inwardly, sound when we hear outwardly. Creation has not displaced her, but is her visible framework and foil. All sounds are her servants, and purveyors, proclaiming not only that their mistress is, but is a rare mistress, and earnestly to be sought after.”
—Henry David Thoreau (1817–1862)
“Men of extraordinary success, in their honest moments, have always sung, “Not unto us, not unto us.” According to the faith of their times, they have built altars to Fortune, or to Destiny, or to St. Julian. Their success lay in their parallelism to the course of thought, which found in them an unobstructed channel; and the wonders of which they were the visible conductors seemed to their eye their deed.”
—Ralph Waldo Emerson (1803–1882)