Orbit spectrum, also known as satellite spectrum, is a segment of a radio spectrum that becomes available when satellites are placed into orbit. This...

A geostationary orbit, also referred to as a geosynchronous equatorial orbit (GEO), is a circular geosynchronous orbit 35,786 km (22,236 mi) in altitude...

Ham radio North American Regional Broadcasting Agreement Open spectrum Orbit spectrum Radio astronomy Radio broadcasting Radio communication Scanner...

Spectrum is a two-stage orbital launch vehicle being developed by the German startup company Isar Aerospace. Development of the Spectrum commenced during...

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...

April 2019. Retrieved 4 July 2021. Levin, Harvey J. (1991). "Trading Orbit Spectrum Assignments in the Space Satellite Industry". The American Economic...

The emission spectrum of atomic hydrogen has been divided into a number of spectral series, with wavelengths given by the Rydberg formula. These observed...

level or orbital. When the electron falls back to its ground level the light is emitted. The above picture shows the visible light emission spectrum for hydrogen...

obtain worldwide approval, via new international treaties, of satellite orbit/spectrum allocations for space-based navigation services (1987) and for direct-to-person...

(58.65 Earth days) are in a 3:2 ratio. This relationship is called spin–orbit resonance, and sidereal here means "relative to the stars". Consequently...

modulations of the spectrum which are the signature of periodic orbits. Interpreting the spectrum then amounts to finding the orbits which correspond to...

Earth-space propagation Study Group 4 – Satellite services 4A: Efficient orbit/spectrum utilization for the fixed-satellite service (FSS) and broadcasting-satellite...

September 2022. Retrieved 4 December 2018. Henri, Yvon (12 June 2008). "Orbit Spectrum Allocation Procedures ITU Registration Mechanism" (PDF). International...

usually 20 times or more, throughput for the same amount of allocated orbital spectrum, thus significantly reducing cost-per-bit. ViaSat-1 and EchoStar XVII...

In telecommunications, especially radio communication, spread spectrum are techniques by which a signal (e.g., an electrical, electromagnetic, or acoustic)...

star's spectrum as its radial velocity varied over the course of the planet's orbit to measure the planet's mass and obtain an indication of its orbital eccentricity...

Very low Earth orbit is a range of orbital altitudes below 400 km (250 mi), and is of increasing commercial importance in a variety of scenarios and for...

communications. Its role is to manage the international radio-frequency spectrum and satellite orbit resources and to develop standards for radiocommunication systems...

Mars Orbiter Mission (MOM), unofficially known as Mangalyaan (Sanskrit: Maṅgala 'Mars', Yāna 'Craft, Vehicle'), is a space probe orbiting Mars since 24...

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

LHS 475 b is a terrestrial planet orbiting the star LHS 475 which is about 40.7 light years away, in the constellation of Octans. It was the first extrasolar...

This object will return to orbit around Earth in 2084 for about 43 days. Animation of 2024 PT5 Its color indices and the spectrum obtained with Gemini North...

K2-18b, also known as EPIC 201912552 b, is an exoplanet orbiting the red dwarf K2-18, located 124 light-years (38 pc) away from Earth. The planet is a...

Neptune is the eighth and farthest known planet orbiting the Sun. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive...

orbital shell of more than 7,500 "V-band satellites in non-geosynchronous orbits to provide communications services" in an electromagnetic spectrum that...

1892 in Heidelberg. It is orbiting the Sun at a distance of 3.21 AU with an eccentricity (oval shape) of 0.159. The orbital plane is inclined at an angle...

Spektr-RG (Russian: Спектр-РГ, Spectrum + Röntgen + Gamma; also called Spectrum-X-Gamma, SRG, SXG) is a Russian–German high-energy astrophysics space observatory...

been a central subject for astronomical research since antiquity. The Sun orbits the Galactic Center at a distance of 24,000 to 28,000 light-years. Its distance...

whether that term should only be applied to the visible portion of the spectrum". Upon reaching the Earth, sunlight is scattered and filtered through the...

Orbiter is a 1986 video game published by Spectrum HoloByte. Orbiter is a game in which the astronauts are launched into space, where they have the ability...