| antisatellite |
combined form of satellite. |
| apogee |
the point in the orbit of the moon or of a man-made satellite that is farthest from the earth. (Cf. perigee.) [1/2 definitions] |
| Charon |
the only known satellite of the planet Pluto. [1/2 definitions] |
| dish antenna |
a radio antenna with a round, concave reflector, used to receive or send satellite and microwave signals. |
| geostationary |
of or pertaining to a satellite or spacecraft that travels around the earth's equator at a speed equal to the earth's rotation so as to maintain a constant relation to points on the earth's surface. |
| global positioning device |
a navigational device, usu. hand-held or installed in a vehicle, that uses the Global Positioning System, a global satellite positioning system, or other similar means to determine one's exact location. |
| Global Positioning System |
a public satellite navigation system designed and controlled by the U.S. Department of Defense that provides an accurate global time reference and is used to determine a precise location on Earth. |
| GPS |
abbreviation of "Global Positioning System," a public satellite navigation system designed and controlled by the U.S. Department of Defense that provides an accurate global time reference and is used to determine a precise location on Earth. |
| killer satellite |
an orbiting satellite that can be directed to a target satellite and destroy it. |
| Landsat |
any of several U.S. satellites that gather and transmit data about the earth (acronym for "land satellite"). |
| moon |
the earth's natural satellite, revolving completely around the earth from east to west in about twenty-eight days and accompanying the earth in its orbit around the sun. [3/6 definitions] |
| orbit |
the curved path in which a planet, satellite, or spacecraft revolves about another body. [1/7 definitions] |
| perigee |
in astronomy, the point in the orbit of a moon or other satellite at which it is closest to the earth. (Cf. apogee.) |
| Roche limit |
the lowest altitude at which a natural satellite can form and orbit a planet or the like without being disturbed by gravitational forces. |
| satellite |
of, relating to, or comprising a satellite. [1/5 definitions] |
| satellite dish |
a dish antenna designed to receive and transmit electromagnetic signals relayed by satellite, commonly used to receive television signals broadcast by satellite. |
| space station |
a large artificial satellite in long-term orbit, designed to be used as a military outpost, scientific research laboratory, or site for the assembly and launching of other spacecraft. |
| superstation |
an independent television station whose broadcasts are relayed by satellite to cable television systems beyond the local broadcast area. |
| telemetry |
the science, technology, or process of gathering and transmitting data automatically over great distances, as from an artificial satellite to a monitoring station on earth. |
| Titan |
the largest satellite of the planet Saturn. [1/3 definitions] |