Astronomy questions This is a list of recently added questions about astronomy. Play astronomy quiz and see all the questions. 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: Tschuka very hard 26% Cosmic inflationCosmic inflation1253Grand unification theoryGrand unification theory1201Theory of SupersymmetryTheory of Supersymmetry718All answers are correct.All answers are correct.1476universe riddles » Who established the official system for naming the seas and mountains of the Moon?Mary Blagg. Even though she was mostly self-taught, she made important contributions to two areas of astronomy, lunar nomenclature and variable stars. In 1916, she was one of the first four women admitted to the Royal Astronomical Society in recognition of her work.The work is titled "Named Lunar Formation" and is the official catalog of the names of our satellite.Created by: Tschuka hard 40% GalileoGalileo343Mary BlaggMary Blagg313Neil AmstrongNeil Amstrong65Nicolaus CopernicusNicolaus Copernicus48Moon riddles » In what period of time does the Sun make a full turn around the center of the Milky Way?Within every 225 million years. The sun performs a full turn around the center of our galaxy during 225 million years.Created by: Tschuka very hard 26% within every 225 million yearswithin every 225 million years166within 250 million yearswithin 250 million years211within 300 million yearswithin 300 million years155within 350 million yearswithin 350 million years104time 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: Tschuka very hard 23% 22 constellations22 constellations22344 constellations44 constellations44766 constellations66 constellations32088 constellations88 constellations297universe riddles » A star that pulsates radially, changing both diameter and temperature is called a ...Cepheid. A Cepheid variable is a type of star that pulsates radially, varying in both diameter and temperature and producing changes in brightness with a well-defined stable period and amplitude. A strong direct relationship between a Cepheid variable's luminosity and pulsation period established Cepheids as important indicators of cosmic benchmarks for scaling galactic and extragalactic distances.Created by: Tschuka very hard 27% QuasarsQuasars32MagnetarsMagnetars28PulsarsPulsars128CepheidCepheid73space 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: Tschuka very hard 25% Halley's cometHalley's comet668Comet McNaughtComet McNaught73Comet Hale-BoppComet Hale-Bopp279There was no such cometThere was no such comet86space 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. Created by: Ninjaivery hard 30% Issac NewtonIssac Newton1092William HerschelWilliam Herschel1374Joseph van FraunhoferJoseph van Fraunhofer1787Edwin HubbleEdwin Hubble1620inventions riddles » Who discovered the first planet outside the Solar System?A. Wolszczan and Dale Frail. Aleksander Wolszczan (born 29 April 1946 in Szczecinek, Poland) is a Polish astronomer. He is the co-discoverer of the first extrasolar planets and pulsar planets.Created by: Tschuka hard 44% A. Wolszczan and Dale FrailA. Wolszczan and Dale Frail4143G. CassiniG. Cassini1282E. HubbleE. Hubble2709no such planets were discoveredno such planets were discovered1158discoveries riddles » Which moons are called "Galilean moons"?Moons of Jupiter. The four largest moons of Jupiter were discovered in 1610 by Galileo Galilei and are today known as Galilean moons. From the end of the 19th century, dozens of much smaller Jovian moons have been discovered and have received the names of lovers or daughters of the Roman god Jupiter or his Greek equivalent Zeus. Created by: Tschuka hard 58% Moons of JupiterMoons of Jupiter806Moons of NeptuneMoons of Neptune119Saturn's moonsSaturn's moons221It is a collective description of all moonsIt is a collective description of all moons241Solar System riddles » When was the Hubble Space Telescope launched into orbit?In 1990. The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. Although not the first space telescope, Hubble is one of the largest and most versatile, and is well known as both a vital research tool and a public relations boon for astronomy. Created by: Tschuka very hard 28% In 1982In 1982267In 1986In 1986751In 1990In 1990564In 1994In 1994396astronautics riddles » Play astronomy quiz and see all the questions.