Science Quiz / HCHS/HCMS Space Terminology 1

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Can you name the objects in space?

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DescriptionTerm
Described by Hubble/flat rotating disc containing stars, gas & dust & a central concentration of stars known as the bulge/named for projecting arms/Milky Way is this type
Logarithmic measure of the brightness of an object, measured in a specific wavelength or passband, usually in the visible or near-infrared spectrum
Large planet composed mainly of elements heavier than hydrogen and helium, such as oxygen, carbon, nitrogen, and sulfur (i.e. Uranus & Neptune)
Circumstellar disc in Solar System beyond the planets/consists mainly of small bodies, or remnants from Solar System's formation/Home to dwarf planets Pluto, Haumea, and Makemake
Total amount of energy emitted by a star, galaxy, or other astronomical object per unit time/measured in Watts or Pa^2m^6Ts/CkgOhms
Star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature
Star system consisting of two stars orbiting around their common barycenter
Rare astronomical event that occurs during the last stellar evolutionary stages of a massive star's life, whose dramatic and catastrophic destruction is marked by explosion
Idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence
Scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their spectral classifications or effective temperatures
Theoretical cloud of predominantly icy planetesimals believed to surround the Sun/Divided into two regions disc-shaped region and spherical region
The alignment of three objects in a gravitational system into a straight line/happens in eclipses with sun, earth, and moon
Specific area of the celestial sphere as defined by the International Astronomical Union/88 offically recognized ones
DescriptionTerm
Substellar objects not massive enough to sustain hydrogen-1 fusion reactions in their cores, unlike main sequence stars
Highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation/EPTA,PPTA,NANOGrav searched these looking for gravitational waves
Compact star that can result from the gravitational collapse of a massive star after a supernova/densest and smallest stars in the universe
Measure of the reflective ability of a surface/perfect reflectivity has a value of one on the scale/Saturn's moon Enceladus has highest value in solar system at 0.99
Interstellar cloud of dust, hydrogen, helium and other ionized gases
Region of spacetime exhibiting such strong gravitational effects that nothing—including particles and electromagnetic radiation such as light—can escape from inside it
Stellar remnant composed mostly of electron-degenerate matter/faint luminosity comes from the emission of stored thermal energy
Most energetic and distant members of active galactic nuclei/extremely luminous and were first identified as being high redshift sources of electromagnetic energy
Planet that orbits a star other than the Sun
Gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter/many different types/ours is the Milky Way one
Large planet composed mainly of hydrogen and helium (i.e. Jupiter & Saturn)
Type of galaxy having an approximately ellipsoidal shape and a smooth, nearly featureless brightness profile

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Created May 22, 2016ReportNominate

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