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. It revolves around the earth from west to east in about 28 days. The moon joins the earth in its orbit around the sun. The moon does not give off light. Instead, its shine comes from the light it reflects from the sun. [3/2 definitions] |
orbit |
the curved path in which a planet, satellite, or spacecraft moves in a circle around another body. [1/3 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] |