Cannibal coronal mass ejections are fast moving solar eruptions that overtake and often absorb their slower moving kin. A term used by astronomers to describe all elements except hydrogen and helium, as in "the universe is composed of hydrogen, helium and traces of metals". Zenith In Earth's atmosphere, the ionosphere begins at an altitude of about 25 miles and extends outward about 250. Iron Meteorite Usually measured in grams per cubic centimeter. Through this mission, the Institute of Space and Astronautical Science (ISAS) in Japan intends to establish the technology to bring back samples of an asteroid’s surface to Earth. Hypered film – Film that has been treated, usually with gas, to enhance its response to low light levels. Bolides typically will produce a sonic boom. Hypothetically a type of matter identical to physical matter except that the atoms are made of: anti-electrons, anti-protons, and anti-neutrons. Celestial pole are two points in which the extended axis of the earth cuts the celestial sphere and about which the stars seem to revolve. Cosmic ray: A radiation of high penetrating power that originates in outer space and consists partly of high-energy atomic nuclei. Regions in the main belt of asteroids where few or no asteroids are found. Prograde Orbit Also a pattern of stars seen from earth which is not part of an established constellation. A small, rocky object in orbit around the Sun, smaller than an asteroid. A unit of measure of atmospheric pressure. Minuscule Volatiles – Chemical compounds that become gaseous at very low temperatures. Married Star hopping – Techniques using familiar patterns of stars to hop from one part of the sky to another; this is done through the use of a telescope and the naked eye. Atomic nuclei (mostly protons) that are observed to strike the Earth's atmosphere with extremely high amounts of energy. Photon Debris Disk Merciful Words that start with M can rack up some high scoring words on your next word game. Visible Light Magellanic Clouds A type of spiral galaxy which has a small, compact nucleus that is much brighter than the rest of the galaxy. Star Cluster The construction enables telescopes to move 8 meter primary mirrors. Elliptical Galaxy Enchanted Learning®Over 35,000 Web PagesSample Pages for Prospective Subscribers, or click below, TapQuiz Maps - free iPhone Geography Game. X-ray Star Of, relating to, or concerned with the stars. Superior conjunction – Constitution of an inferior planet when it lies on the far side of the sun. Andromeda galaxy is a spiral galaxy that is nearly two and a half million light years away in the constellation Andromeda. Granulation Magnetograph – A recording magnetometer used for recording variations in the earth’s magnetic field. A partial lunar eclipse occurs when the Moon passes into the penumbra, or partial shadow. A supernova is a cataclysmic explosion caused when a star exhausts its fuel and ends its life. Focal ratio – The ratio of the focal length of a lens or mirror to its diameter. Coronagraph mask is a circular shaped instrument designed to block light from a star’s disk. MUSES-C – The MUSES-C Mission will investigate an asteroid known as an Earth-approaching type. Content from this Website may not be used in any form without written permission from the site owner. Find words that start with M grouped by word length and points for Scrabble, Words With Friends, Word Chums, and more games! Miniscule These include eclipsing binaries. Lighter region of a sunspot surrounding the umbra (dark center). Mediterranean A disk of gas that accumulates around a center of gravitational attraction, such as a white dwarf, neutron star, or black hole. A more efficient device at collecting light than regular film. Eccentricity defines the shape of an object's orbit. An increase in temperature caused when incoming solar radiation is passed but outgoing thermal radiation is blocked by the atmosphere. Doppler Effect If you ever wonder the meaning of an astronomical word, search no further and browse below to find the definition of the space term. All rights reserved. The apparent change in wavelength of sound or light emitted by an object in relation to an observer's position. Black Moon Light-gathering power – the ability of a telescope to collect light; the larger a telescope’s aperture, the greater its light-gathering power. Celestial Equator It is caused by charged particles from the Sun as they interact with the Earth's magnetic field. A galaxy that has a ring-like appearance. Mediocre Hertzsprung-Russell diagram – a diagram that plots luminosity against temperature for a group of stars. Isotope – Forms of an element wherein all atoms have the same number of protons but different numbers of neutrons. Absolute magnitude is the brightness the object would have if seen from a distance of 10 parsecs (32.6 light-years) from Earth. Melodious otherwise noted. Universal time – Also recognized as Greenwich Mean Time, forming the basis in all civil time keeping. Mean The approximately 11-year quasi-periodic variation in frequency or number of solar active events. Quadrature Ephemeris – Table that identifies the positions of astronomical objects at certain intervals. This is located at NSF Amundsen-Scott South Pole station. The equinoxes occur on or near March 21 and September 22. Dense regions of molecular clouds where stars are forming. Chasma The interval of a complete lunar cycle, between one new Moon and the next. It is a class of galaxies that emit a large amount of energy from their center more than ordinary galaxies. Martial Focal length – Distance from a lens or mirror to the point it draws light to a focus. Solar filter – A safety precaution, a filter used to block almost all the suns light when being viewed. Words are listed in alphabetical order. They are highly luminous and presumed to be extragalactic. Mute A Synodic month is equal to 29.53 days and is measured as the time between a lunar phase and the return of that same phase. A measure of flattening at the poles of a planet or other celestial body. Neutrino Plate tectonics – Theory describing the possibility on how earth’s crust is broken into plates, suggesting that those plates move thru and across earth’s surface. Elliptical galaxy – A galaxy whose structure is shaped like an ellipse and is smooth and lacks complex structures such as spiral arms. The surface of the Sun or other celestial body projected against the sky. On this scale, the Sun has an absolute magnitude of +4.8 while it has an apparent magnitude of -26.7 because it is so close. Mountainous Open cluster – System containing a few dozen to a few thousand stars that formed from the same stellar nursery. Megaparsec – One million parsecs, equivalent to 3.26 million light-years. Middling Eclipsing Binary Lunar Eclipse Meaty Maladroit To cause a planet or satellite to deviate from a theoretically regular orbital motion. Common colors are pale green and pink in spiral curtains, arcs and streamers. Inclination The Oort cloud was named after the Dutch astronomer who first proposed it. Two small, irregular galaxies found just outside our own Milky Way galaxy. Absolute zero – The international community agreed to define absolute zero as equivalent to −273.15°C on the Celsius scale or−459.67°F on the Fahrenheit scale. Momentous © 1996-2020 LoveToKnow, Corp., except where Igneous rock – Rock formed by the solidification of magma. Malevolent Photosphere Synodic Month A total solar eclipse occurs when the Moon is close enough to completely block the Sun's light. He is attributed for founding meteor science. This depends on the location of the observer. Mangy An element consisting of one electron and one proton. A term that means outside of or beyond our own galaxy. Areas of the Sun's surface that are cooler than surrounding areas. Globular clusters are composed of older stars, and are usually found around the central regions of a galaxy. Electromagnetic Spectrum – The range of all kinds of wavelengths of electromagnetic radiation. Photovoltaic – When light energy or emissions are converted into electricity. Blink comparator is used by astronomers, it is an optical instrument used to detect differences in two photographs of the same object by rapidly switching between the two, one picture at a time. An orbit in which a satellite's orbital velocity is matched to the rotational velocity of the planet. Cosmic String An effect caused by the apparent wobble of the Moon as it orbits the Earth. The highest energy, shortest wavelength form of electromagnetic radiation. Gravity or Gravitational waves – Weak, wavelike disturbances which represent the radiation related to the gravitational force; produced when massive bodies are accelerated or otherwise disturbed. Regular Satellite Sublimate – Transition of solid substance that is evaporated into a gas without reaching the liquid phase. Also known as the northern lights, this is an atmospheric phenomenon that displays a diffuse glow in the sky in the northern hemisphere. Rich-field telescope – Designed to show a larger field of view at low magnification. All of the heavy elements were created in supernova explosions. Mesmerizing A grouping of stars that make an imaginary picture in the sky. Opposition Optical double – Two stars at different distances that lie along nearly the same line of sight and thus appear close together. Resolution (Resolving power) – A camera or a telescopes ability to capture fine details of a subject. Mare – Dark and smooth area on the surface of the moon or on a planet. Chromosphere is a layer of the sun’s atmosphere. It was originally designed in the 1970s and launched in 1990. Main Belt Light Year Celestial Poles Memorial Spectroscopy Machiavellian Macedonian Materialistic Mown Here is a list of Descriptive Words that begin with Letter M. Total letter M words: 245 words. Irregular Galaxy Regular satellites are believed to have been formed at the same time as the planet, unlike irregular satellites which are believed to have been captured by the planet's gravity.
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