(MSFC). The Orbital Express program was aimed at developing "a safe and cost-effective approach to autonomously service satellites in orbit". The system...

connects Outer London town centres, railway stations and transport hubs. Orbital express bus routes were proposed in 2008 by Mayor of London Boris Johnson,...

are expressed in units of time, usually hours, days, or years. According to Kepler's Third Law, the orbital period T of two point masses orbiting each...

 218–219. ISBN 9780387789040. "On-Orbit Mission Updates". archive.darpa.mil. Retrieved 2018-08-01. "Orbital Express". archive.darpa.mil. Retrieved 2018-08-01...

(MSFC). The Orbital Express program was aimed at developing "a safe and cost-effective approach to autonomously service satellites in orbit". The system...

in orbit around a planet other than Earth, behind only NASA's still active 2001 Mars Odyssey. The Mars Express mission is dedicated to the orbital (and...

Orbital inclination measures the tilt of an object's orbit around a celestial body. It is expressed as the angle between a reference plane and the orbital...

The first unmanned Orbital Flight Test did not occur until December 20, 2019, and was deemed a partial failure. A second Orbital Flight Test was required...

listeners believe that they had bought a mis-pressed album (Orbital 1 packaged as Orbital 2). The album reached #28 on the UK album charts, staying in...

Orbital Express Launch Ltd., or Orbex, is a United Kingdom-based aerospace company that is developing a small commercial orbital rocket called Prime. Orbex...

Orbit Express Airlines, shortly Orex Airlines, was a cargo airline based in Istanbul, Turkey. It was established in 2003, and operated scheduled and charter...

In celestial mechanics, an orbit (also known as orbital revolution) is the curved trajectory of an object such as the trajectory of a planet around a star...

In quantum mechanics, an atomic orbital (/ˈɔːrbɪtəl/) is a function describing the location and wave-like behavior of an electron in an atom. This function...

designed a small launcher called Orbital Express (later renamed "ORBEX") for taking 100-kg payloads to low-Earth orbit, collaborating with Bristol Aerospace...

the deal to complete. The deal was closed on February 16, 2024. The Orbital Express autonomous satellite servicing mission The WorldView-2 Earth observation...

An orbital propellant depot is a cache of propellant that is placed in orbit around Earth or another body to allow spacecraft or the transfer stage of...

X26 was renumbered SL7, becoming part of the Superloop network of orbital express bus routes. The frequency was also increased to every 8-20 minutes...

Orbital elements are the parameters required to uniquely identify a specific orbit. In celestial mechanics these elements are considered in two-body systems...

KIKU-7, also known as Orihime/Hikoboshi Kosmos 186 and Kosmos 188 Orbital Express Robotic Refueling Mission "Government Of India, Department Of Space...

4π2R3 = T2GM and V2R = GM, where R is the radius of orbit in metres; T, the orbital period in seconds; V, the orbital speed in m/s; G, the gravitational constant...

detectable gravitational waves. Orbital decay is caused by one or more mechanisms which absorb energy from the orbital motion, such as fluid friction,...

In chemistry, orbital hybridisation (or hybridization) is the concept of mixing atomic orbitals to form new hybrid orbitals (with different energies,...

axis the orbital period does not depend on the eccentricity (See also: Kepler's third law). Under standard assumptions, the specific orbital energy (...

A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours...

upcoming orbital launch systems. For retired launch vehicles, see Comparison of retired orbital launch systems. This comparison of orbital launch systems...

cryogenic propellants. Space Infrastructure Servicing by Canadian MDA Orbital Express — a 2007 U.S. government-sponsored mission to test in-space satellite...

center of the orbit is relatively close to the center of the Sun (relative to the size of the orbit). As seen from Earth, the planet's orbital prograde motion...

region. The terms atomic orbital and molecular orbital were introduced by Robert S. Mulliken in 1932 to mean one-electron orbital wave functions. At an elementary...

match of the orbital velocities and position vectors of the two spacecraft, allowing them to remain at a constant distance through orbital station-keeping...

near-geosynchronous orbit, although large delta-v orbital maneuvering services were also envisioned. Building off of the 2007 Orbital Express mission—a U.S...