Superior Planet These have expanded up a hundred times the diameter of the sun. Ecliptic Also the depression around the opening of a volcano. Hypergalaxy Spectrum – 1. Absolute magnitude is the brightness the object would have if seen from a distance of 10 parsecs (32.6 light-years) from Earth. The Doppler effect is used to estimate an object’s speed and direction. Position angle – Direction in the heavens one celestial object from another, measured eastward from due north. Double Star – Grouping of two stars. Matter A large planet or planetary body that does not orbit a star. Brown dwarf is a cold and dark star too small to initiate nuclear reactions that generate heat and light. A total solar eclipse occurs when the Moon is close enough to completely block the Sun's light. The total or partial blocking of one celestial body by another. MUSES stands for a series of missions performed launched by the MU rocket and C means the third mission of this series. Diffraction – Spreading out of light as it passes the edge of an obstacle. Escape velocity – Speed required for something or an object, to be free of the gravitational pull of a planet or other body. This is the current accepted theory for the origin of the universe and is supported by measurements of background radiation and the observed expansion of space. Maternal A mutual physical force of nature that causes two bodies to attract each other. Monomorphic Malodorous Rich-field telescope – Designed to show a larger field of view at low magnification. Enter up to 3 wildcards (? Inclination Debris Disk Irregular satellites are believed to have been captured by the planet's gravity rather than being formed along with the planet. Eclipse Local Group – the galaxy cluster containing 35 galaxies to which the Milky Way Galaxy belongs. Montanan These have expanded from a hundred to a thousand times the diameter of the sun. The space within the boundary of the heliopause containing the Sun and the Solar System. Terrestrial Regions of charged particles in a magnetosphere. Nadir The telescope is named for astronomer Edwin Hubble. Marbled Nuclear fusion is the reaction that fuels the Sun, where hydrogen nuclei are fused to form helium. Eclipsing Binary A type of star which is believed to be surrounded by a thin envelope of gas, which is often indicated by bright emission lines in its spectrum. In Earth's atmosphere, the ionosphere begins at an altitude of about 25 miles and extends outward about 250. Mobile A scale used by astronomers to measure the brightness of a star or other celestial object. A satellite that orbits a planet far away with an orbit that is eccentric and inclined. Corona: A faintly colored luminous ring appearing to surround a celestial body visible through a haze or thin cloud, especially such a ring around the moon or sun, caused by diffraction of light from suspended matter in the intervening medium. They may or may not be still bound by gravity. It usually refers to the third full moon in a season with four full moons. This name derives from a generalization of the names of some of the largest asteroids in Jupiter's Lagrange points. Also known as the poles, this is an imaginary line through the center of rotation of an object. Stars form from massive clouds of hydrogen gas. Neutron stars have a strong gravitational field and some emit pulses of energy along their axis. The size of the opening through which light passes in an optical instrument such as a camera or telescope. Celestial Sphere Magnanimous Transit Bright objects have a low apparent magnitude while dim objects will have a higher apparent magnitude. Moral Comet Averted vision – a technique to view faint objects using peripheral vision. Modern The apparent change in shape of the Moon and inferior planets as seen from Earth as they move in their orbits. This results in a ring of light around the Moon. It is thought that planets are eventually formed from the gas and dust within the protoplanetary disk. They can also be formed by collisions between planetesimals. Infrared – a form of light with slightly lower energy than visible light but with greater energy than radio waves. Astrometry is the branch of astronomy dealing with the measurement of the positions and motions of heavenly bodies. These include eclipsing binaries. Coated optics are optical elements that have refracting and reflecting surfaces coated with one or more coatings of dielectric or metallic material. Sunspot cycle – Cycle that averages eleven years at which the number of sunspots decreases and increases. General relativity – Theory of relativity governing accelerated motion that describes gravity as a curvature of space-time. In a total lunar eclipse, the Moon passes into the Earth's umbra, or total shadow. Supernova Remnant Known as the Aurora Borealis in the northern hemisphere. Antipodal Point Mousy They are caused by the convective motions of the hot gases inside the Sun. A small planetary body in orbit around the Sun, larger than a meteoroid but smaller than a planet. It is the name given to light emitted by atoms, molecules, and ions that have been excited by energetic charged particles. A cloud of dust and gas in space, usually illuminated by one or more stars. This glossary of astronomy terms contains definitions for some of the most common words used in astronomy, cosmology, astrophysics, and space exploration. Kepler's Third Law Tides – Distortion of a body caused by the gravitational influence on another body. Long-period comet – Comets that have orbital periods greater than 200 years. Lunar Month A concentration of matter such as a galaxy or cluster of galaxies that bends light rays from a background object. Focus – Point at which rays of light passing through a lens meet. Intergalactic – Space between the galaxies. Also known as the northern lights, this is an atmospheric phenomenon that displays a diffuse glow in the sky in the northern hemisphere. The branch of science that explores the chemical interactions between dust and gas interspersed between the stars. Kirkwood Gaps This glossary of astronomy terms contains definitions for some of the most common words used in astronomy, cosmology, astrophysics, and space exploration. X-ray Astronomy Circumpolar: Circumpolar stars are permanently above the horizon from a given observing point on Earth; that is to say, they never set. Nucleus – the central region of an atom, comet, or galaxy. Movable Sunspots are usually associated disturbances in the Sun's electromagnetic field. A state in which an orbiting object is subject to periodic gravitational perturbations by another. Red Giant Mammoth © 1996-2020 LoveToKnow, Corp., except where Medicinal Electron Flux – Rate of flow of electrons through a reference surface. Precession – Periodic change in the direction of an objects axis caused by the gravitational influence from another body. Misunderstood Reticle – Using two fine wires as part of a grid attached to part of the focal plane or a telescope eyepiece. Annular eclipse, a solar eclipse in which the moon covers all but the bright ring around the circumference of the sun. Mauve Obliquity Astrochemistry Motionless Lunation – the time between two successive new moons; approximately 29.5 days. Masterful Oblateness Kepler's Second Law Malefic A narrow stream of gas or particles ejected from an accretion disk surrounding a star or black hole. Nebulae represent the raw material the stars are made of. Galaxy cluster – Gravitationally bound assemblage of dozens to thousands of galaxies. Limb -W-, Waning/Waxing – Interval between full and new moon. Protoplanet – Gas, dust, and rocks that gradually becomes a whole planet. Minor planet – Rocky body that orbits the sun; also recognized as an asteroid. Clock drive is a mechanism that causes an equatorial telescope to revolve about its polar axis so that it keeps the same star in its field of view. Jet – a narrow stream of gas or particles ejected from an accretion disk surrounding a star or black hole. This theory has been abandoned by most astronomers in favor of the big bang theory. Local time centered in Greenwich, England. Red giant – Cool star nearing the end of its cycle. Escape Velocity Cosmic String Deep-sky objects – Objects that are located beyond the solar system, usually consisting of galaxies, nebulae, stars, and star clusters. 2) Area of complete darkness on the shadow made by an eclipse. One bar is equal to 0.987 atmospheres, 1.02 kg/cm2, 100 kilopascal, and 14.5 lbs/square inch. Major Planet Azimuth Thus a star with a magnitude of 1 is 100 times brighter than on with a visual magnitude of 6. Melodramatic Mentionable Carbon star is a cool, red giant having a spectrum with strong bands of carbon compounds. Middle The theory that suggests the universe is expanding but exists in a constant, unchanging state in the large scale. Mantle – The portion of a planet’s interior above the core but below the crust. Supergiant Born in Marshfield, Missouri then later moved to Chicago at the age of 9. Some of the youngest open clusters are still embedded in the gas and dust from which they formed. Having a list of words with a specific Spectroscopy – In astronomy, it is the study of astronomical subjects. A bright eruption of hot gas in the Sun's photosphere. Solar wind – Stream of charged minute particles coming from the sun. A planet orbits the Sun in an ellipse with the Sun at one focus. Moaning The distance between consecutive crests of a wave. A bright celestial object that gives off x-rays as a major portion of its radiation. Some comets have an orbit that brings them close to the Sun where they form a long tail of gas and dust as they are heated by the Sun's rays. Enchanted Learning®Over 35,000 Web PagesSample Pages for Prospective Subscribers, or click below, TapQuiz Maps - free iPhone Geography Game. Resolution (Resolving power) – A camera or a telescopes ability to capture fine details of a subject. A galaxy that has a ring-like appearance. Singularity – An area wherein space and time are infinitely distorted. Dark matter – a term used to describe matter in the universe that cannot be seen, but can be detected by its gravitational effects on other bodies. Stony Iron Cosmic ray: A radiation of high penetrating power that originates in outer space and consists partly of high-energy atomic nuclei. Redshift – Multiplication of wavelength of light coming from an object due to its motion away from earth; expansion of the universe; strong gravitational field. X-ray Isotope – Forms of an element wherein all atoms have the same number of protons but different numbers of neutrons. Space and solar system vocabulary, Space and solar system word list - www.myvocabulary.com It is rare and named after asteroid 5335 Damocles, the first of its kind discovered. A meteorite that is composed mainly of iron mixed with smaller amounts of nickel. Achromatic lenses are used to take chromatic aberrations away from images. Found 52474 words that start with m. Browse our Scrabble Word Finder, Words With Friends cheat dictionary, and WordHub word solver to find words starting with m. Or use our Unscramble word solver to find your best possible play! Degree angular Scale interferometer (DASI) – Used to measure temperature and polarization in the Cosmic Microwave background. Optical double – Two stars at different distances that lie along nearly the same line of sight and thus appear close together.
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