Universe questions This is a list of recently added questions about universe. Play universe quiz and see all the questions. What constellation is the Big Dipper in?Ursa Major. The Big Dipper, or the Plough, is an asterism consisting of seven bright stars of the constellation Ursa Major. Four define a "bowl" or "body" and three define a "handle" or "head". It is recognized as a distinct grouping in many cultures.Created by: Ninjaieasy 76% OrionOrion120Ursa MajorUrsa Major564CassiopeiaCassiopeia44LeoLeo12stars riddles » What are the Perseids meteor showers associated with?Comet Swift–Tuttle. In 1866, after the perihelion passage of Swift-Tuttle in 1862, the Italian astronomer Giovanni Virginio Schiaparelli discovered the link between meteor showers and comets. His findings put new light on a subject, and changed the approach of astronomers to comets. Created by: Ninjaivery hard 22% Comet HalleyComet Halley939Comet Swift–TuttleComet Swift–Tuttle587Comet Shoemaker–LevyComet Shoemaker–Levy471Apophis AsteroidApophis Asteroid579astronomy riddles » Which spacecraft flew by and photographed the Halley's comet in 1986?Giotto became the first spacecraft to make close up observations of a comet. On 13 March 1986, the mission succeeded in approaching Halley's nucleus at a distance of 596 kilometers. It was also the first spacecraft to return from interplanetary space and perform an Earth swing by. The spacecraft was named after the Early Italian Renaissance painter Giotto di Bondone.Created by: Ninjaivery hard 29% CassiniCassini35GalileoGalileo67GiottoGiotto51RosettaRosetta22astronomy riddles » What type of plasma is Sun composed of?Hot. The Sun is a nearly perfect sphere of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. Hot plasmas (thermal plasmas) have electrons and the heavy particles at the same temperature, i.e. they are in thermal equilibrium with each other. Cold plasmas (nonthermal plasmas) on the other hand have the ions and neutrals at a much lower temperature, whereas electrons are much "hotter".Created by: Ninjaihard 41% coldcold516hothot1930ultracoldultracold950none of the abovenone of the above1299Sun riddles » Which space probe is the farthest from Earth?Voyager 1 is a space probe launched by NASA on September 5, 1977 as a part of the Voyager program to study the outer Solar System. At a distance of 141 AU, approximately 13 billion miles (21 billion km), from the Sun, it is the farthest spacecraft and man-made object from Earth.Created by: Ninjaivery hard 39% Voyager 1Voyager 12549Voyager 2Voyager 22022Pioneer 10Pioneer 10930Pioneer 11Pioneer 11893Solar System riddles » How is the visible surface of the Sun called?Photosphere. The photosphere is a layer below which the Sun becomes opaque to visible light. It is tens to hundreds of kilometers thick, and is slightly less opaque than air on Earth. Because the upper part of the photosphere is cooler than the lower part, an image of the Sun appears brighter in the center than on the edge or limb of the solar disk, in a phenomenon known as limb darkening.Created by: Ninjaivery hard 32% chromospherechromosphere486coronacorona1132stratospherestratosphere349photospherephotosphere963space riddles » Orion Nebula, visible to the naked eye, is a type of...Emission nebula. An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths. The most common source of ionization is high-energy photons emitted from a nearby hot star. The nebula's color depends on its chemical composition and degree of ionization. Due to the prevalence of hydrogen in interstellar gas, and its relatively low energy of ionization, many emission nebulae appear red due to the strong emissions of the Balmer series.Created by: Ninjaivery hard 30% reflection nebulareflection nebula545emission nebulaemission nebula1193planetary nebulaplanetary nebula537supernova remnantsupernova remnant1579space riddles » The idea that the nascent universe passes through the phase of exponential expansion, which was driven by the positive density of vacuum energy, is called;Cosmic inflation. Alan Guth formally proposed the idea of cosmic inflation in 1981, the idea that the nascent universe passed through a phase of exponential expansion that was driven by a positive vacuum energy density (negative vacuum pressure).Created by: Tschukavery hard 27% Cosmic inflationCosmic inflation1319Grand unification theoryGrand unification theory1247Theory of SupersymmetryTheory of Supersymmetry758All answers are correct.All answers are correct.1533physics riddles » The celestial sphere is divided into ...88 constellations. The current list of 88 constellations recognized by the International Astronomical Union since 1922 is based on the 48 listed by Ptolemy in his Almagest in the 2nd century, with early modern modifications and additions In 1930, the boundaries between the 88 constellations were devised by Eugène Delporte along vertical and horizontal lines of right ascension and declination.Created by: Tschukavery hard 30% 22 constellations22 constellations27344 constellations44 constellations54866 constellations66 constellations41088 constellations88 constellations532astronomy riddles » What was the most beautiful comet of the second half of the twentieth century, with two tails visible to the naked eye?Comet Hale-Bopp. Hale–Bopp was discovered on July 23, 1995 separately by Alan Hale and Thomas Bopp prior to it becoming naked-eye visible on Earth. Comet Hale-Boppit was visible to the naked eye for a record 18 months, twice as long as the previous record holder, the Great Comet of 1811. Accordingly, Hale–Bopp was dubbed the Great Comet of 1997.Created by: Tschukavery hard 37% Halley's cometHalley's comet967Comet McNaughtComet McNaught117Comet Hale-BoppComet Hale-Bopp726There was no such cometThere was no such comet111comets riddles » Play universe quiz and see all the questions.