10 most difficult stars riddles A list of ten (out of 26) stars related questions that are the most often answered incorrectly Stars quiz What is the second brightest star in the night time sky, after Sirius?Canopus is the brightest star in the southern constellation of Carina, and the second brightest star in the night time sky, after Sirius. Its name is generally considered to originate from the mythological Canopus, who was a navigator for Menelaus, king of Sparta.very hard 18% ArcturusArcturus13%CanopusCanopus18%VegaVega58%ProcyonProcyon9%Created by: Ninjai. Statistics based on 82 answers in 2 languages »Solar System riddles » What astronomical object emerges sometimes from supernova instead of a black hole?Magnetar. A magnetar is a type of neutron star with an extremely powerful magnetic field. The magnetic field decay powers the emission of high-energy electromagnetic radiation, particularly X-rays and gamma rays. As of March 2016, only 23 magnetars are known, with six more candidates awaiting confirmation.very hard 23% MagnetarMagnetar23%BlazarBlazar12%QuasarQuasar43%only a black hole can emerge from supernovaonly a black hole can emerge from supernova21%Created by: Ninjai. Statistics based on 2163 answers in 3 languages »space riddles » What is the largest discovered star? (by radius)UY Scuti is a bright red supergiant and pulsating variable star in the constellation Scutum. It is currently the largest known star by radius and is also one of the most luminous of its kind. It has an estimated radius of 1,708 solar radii (1.188×109 kilometres; 7.94 astronomical units); thus a volume nearly 5 billion times that of the Sun. It is approximately 2.9 kiloparsecs (9,500 light-years) from Earth. If placed at the center of the Solar System, its photosphere would at least engulf the orbit of Jupiter.very hard 24% VY Canis MajorisVY Canis Majoris32%V396 CentauriV396 Centauri31%UY ScutiUY Scuti24%Alfa PerseiAlfa Persei11%Created by: Dev. Statistics based on 1554 answers in 3 languages »astronomy riddles » What is the name of the hypothetical last stage of the evolution of Sun-sized stars?Black dwarf. A black dwarf is a theoretical stellar remnant, specifically a white dwarf that has cooled sufficiently that it no longer emits significant heat or lightvery hard 24% White dwarfWhite dwarf22%Black dwarfBlack dwarf24%Gray dwarfGray dwarf3%Red dwarfRed dwarf50%Created by: Tschuka. Statistics based on 3321 answers in 5 languages »astronomy riddles » The brightest star in the constellation of Virgo is ...Spica is the brightest star in the constellation of Virgo and the 16th brightest star in the night sky. Analysis of its parallax shows that it is located 250 ± 10 light years from the Sun. Spica, along with Denebola or Regulus depending on the source and Arcturus, is part of the Spring Triangle asterism, and by extension.very hard 25% PorrimaPorrima11%VindemiatrixVindemiatrix41%ZavijavaZavijava21%SpicaSpica25%Created by: Tschuka. Statistics based on 174 answers in 3 languages »astronomy riddles » The colour of the star corresponds to its temperature. Which one is the hottest?Blue. You can tell the temperature of a star by looking at its color. The coolest stars are red, then orange, then yellow. Even hotter stars are white and then the hottest stars are blue. The surface temperature of our sun is 5777 Kelvin.very hard 27% redred17%yellowyellow10%blueblue27%white-bluewhite-blue43%Created by: Ninjai. Statistics based on 2257 answers in 5 languages »temperatures riddles » Who invented spectroscope?Joseph van Fraunhofer. Joseph Ritter von Fraunhofer was a Bavarian physicist and optical lens manufacturer. He made optical glass and achromatic telescope objective lenses, invented the spectroscope, and developed diffraction grating. very hard 31% Issac NewtonIssac Newton18%William HerschelWilliam Herschel23%Joseph van FraunhoferJoseph van Fraunhofer31%Edwin HubbleEdwin Hubble27%Created by: Ninjai. Statistics based on 6177 answers in 3 languages »inventors riddles » What is the source of the most powerful release of energy in the universe, second in scale only to the Big Bang?Gamma-ray bursts are the brightest in the universe, even brighter than the glare of quasars, second only to the brightness and power of the Big Bang. It is believed that arise during disruption of stars by black holes.very hard 33% supermassive starssupermassive stars4%quasarsquasars19%gamma-ray burstgamma-ray burst33%supernovasupernova42%Created by: Krzysztof Moskal. Statistics based on 4207 answers in 2 languages »universe riddles » Which of the constellations is the largest? (seen from the ground) Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees. Also one of the longest at over 100 degrees, It has a long history, having been included among the 48 constellations listed by the 2nd century astronomer Ptolemy. It is commonly represented as a water snake. very hard 33% Big DogBig Dog9%HydraHydra33%OrionOrion24%Great BearGreat Bear32%Created by: Tschuka. Statistics based on 2005 answers in 2 languages »astronomy riddles » What is the name of the brightest star in the constellation Ursa Major?Alioth is (despite being designated 'epsilon') the brightest star in the constellation of Ursa Major, and at magnitude 1.76 is the thirty-first-brightest star in the sky. Historically, the star was frequently used in celestial navigation in the maritime trade, because it is listed as one of the 57 navigational stars.very hard 37% AliothAlioth37%DubheDubhe15%MerakMerak23%MizarMizar23%Created by: Tschuka. Statistics based on 1340 answers in 3 languages »records riddles » Play stars quiz and see all the questions.