earth orbit


Also found in: Acronyms.

earth orbit

[¦ərth ′ȯr·bət]
(astronomy)
The elliptical motion of the earth about the sun (eccentricity 0.01675, average radius 9.296 × 107 miles or 1.496 × 108 kilometers) in a sidereal year.
References in periodicals archive ?
The idea behind the Starlink project is to develop a low-cost, high-performance broadband service by creating a constellation of low earth orbit satellites.
The engineers, both at Google and O3b, may have estimated that 180 Low Earth Orbit satellites can cover the entire human population in providing the uninterrupted internet access, while taking into account the rotation of the Earth around its own axis.
Secondly, every geosynchronous Earth orbit (GEO) satellite placement is a potential lunar mission starting point.
Benson is the founder and CEO of SpaceDev, a Colorado-based company that is planning the first commercial mission beyond Earth orbit. The firm's Near Earth Asteroid Prospector, which it hopes to launch by mid-2001, is a desk-sized probe that will move into orbit around one of the hundreds of known near-Earth asteroids, collecting and transmitting scientific data, which will be sold to NASA, universities, or other clients.
In April 1984, NASA's Long Duration Exposure Facility was placed in low Earth orbit by the space shuttle Orbiter Challenger.
Another significant issue is the proposed use of nuclear thermal propulsion, an option to be considered for travel from Earth orbit to Mars.
Mars-bound ships will require much more radiation shielding than do spacecraft in Earth orbit, and probably simulated gravity, as so far there are no known palliatives for the muscle loss, bone resorption and extreme productivity drop-off Soviet cosmonauts have experienced in stays of about a year aboard the Russian Mir orbital laboratory.
Tugging of spacecraft from one orbit to another, i.e., from Low Earth Orbit to geostationary orbit, or from Earth orbit to lunar orbit On-orbit assembly, i.e., placing several parts of a system together, such as attaching an antenna onto a spacecraft on-orbit.
With this agreement, Hispasat joins Asia's largest satellite operator SKY Perfect JSAT, in the growing trend for satellite operators to future-proof their communications solutions through the development of low earth orbit (LEO) capabilities.
SES has announced that its four new O3b Medium Earth Orbit (MEO) satellites were successfully launched into space by Arianespace onboard a Soyuz rocket, from the Guiana Space Center in Kourou, French Guiana, the company said.
FLORIDA (CyHAN)- United Launch Alliance Atlas V rocket lifts off from Space Launch Complex 41 at Cape Canaveral Air Force Station carrying NASA's Tracking and Data Relay Satellite, or TDRS-L, spacecraft to Earth orbit. Liftoff was at 9:33 p.m.
Scientists scanning satellite images of the southern Sahara have detected trails left on the landscape by the whirlwinds commonly known as dust devils, the first such observations made from Earth orbit.

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