10 most difficult Moon riddles A list of Moon related questions that are most often answered incorrectly Astronomy quiz In which phase is the Moon during the solar eclipse?New moon. The new moon is the first phase of the Moon, when its orbit is not seen from the Earth; it is at this moment when the Moon and the Sun have the same ecliptical longitude. The Moon is not visible at this time except when it is seen in silhouette during a solar eclipse when it is illuminated by earthshine.very hard 26% first or third quarterfirst or third quarter7%it doesn't matterit doesn't matter25%full moonfull moon39%new moonnew moon26%Created by: Ninjai. Statistics based on 2766 answers in 2 languages »Solar System riddles » When was the the invisible side of the Moon photographed for the first time?In 1959, the Soviet Luna spacecraft photographed the invisible side of the Moon, proving that the dark patches on the surface are not seas of liquid, but only areas of fine volcanic dust.very hard 28% In 1959In 195928%In 1964In 196427%In 1969In 196925%In 1972In 197218%Created by: Tschuka . Statistics based on 503 answers in 2 languages »astronomy riddles » How long did Neil Armstrong’s first moon walk last?2½ hours. Each of the subsequent five Apollo program landings were allotted gradually longer periods for EVA activities – the crew of Apollo 17, by comparison, spent over 22 hours exploring the lunar surface.very hard 32% 2 minutes2 minutes31%½ hour½ hour31%2½ hours2½ hours32%2 days2 days4%Created by: globalquiz.org. Statistics based on 4900 answers in 2 languages »astronautics 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.hard 40% GalileoGalileo44%Mary BlaggMary Blagg40%Neil AmstrongNeil Amstrong8%Nicolaus CopernicusNicolaus Copernicus6%Created by: Tschuka . Statistics based on 768 answers in 2 languages »astronomy riddles » Who was the first to visit the Sea of Tranquility?Neil Armstrong. Apollo 11 landing site was selected because it had been characterized as relatively flat and smooth by the automated Ranger 8 and Surveyor 5 landers.hard 43% Christopher ColumbusChristopher Columbus13%Ferdinand MagellanFerdinand Magellan29%Abel TasmanAbel Tasman13%Neil ArmstrongNeil Armstrong43%Created by: ex-terminator. Statistics based on 8554 answers in 2 languages »NASA riddles » What is larger on the sky: the Moon or the Sun? (by apparent size)Sometimes the Moon, sometimes the Sun. The Moon's orbit is elliptical, and its apparent diameter varies by 10%. This is why both total eclipses (if the Moon is larger) and annular eclipses (if the Sun is larger) happen.hard 43% the Sunthe Sun18%the Moonthe Moon23%both are identicalboth are identical14%sometimes the Moon, sometimes the Sunsometimes the Moon, sometimes the Sun43%Created by: pan Krzyżówka. Statistics based on 11459 answers in 2 languages »sky riddles » The Moon takes just as long to rotate around its own axis as it does to revolve around the planet (Earth). How many other moons in the Solar System share this feature?Most of them. If the rotational frequency of satellite is larger than orbital frequency, a small torque counteracting the rotation arises, eventually locking the frequencies in a tidal lock. Pluto and Charon are the extreme example, being locked to each other.hard 44% nonenone31%oneone14%threethree9%most of themmost of them44%Created by: globalquiz.org. Statistics based on 19298 answers in 4 languages »astronomy riddles » How many people stood on the Moon so far?Twelve. There have been six manned U.S. landings of the Apollo program (between 1969 and 1972) and numerous unmanned landings, though no soft landings have occurred since 1976.hard 49% oneone5%threethree20%sevenseven24%twelvetwelve49%Created by: globalquiz.org. Statistics based on 6953 answers in 2 languages »astronautics riddles » What kind of 'natural disasters' happen on the moon?Moonquakes are produced by tidal forces. Moonquakres are much less common and weaker than earthquakes, although they can last for up to an hour - a significantly longer time than terrestrial earthquakes - because of the absence of water to damp out the seismic vibrations.hard 50% volcanic eruptionsvolcanic eruptions12%moonquakesmoonquakes50%floodsfloods2%dust stormsdust storms34%Created by: life-o-holic. Statistics based on 20933 answers in 2 languages »astronomy riddles » Is the Earth–Moon distance constant?It slowly increases. Due to the loss of energy caused by tides, the Earth–Moon distance increases at approximately 38 millimetres per year.hard 50% It is constantIt is constant23%It slowly increasesIt slowly increases50%It slowly decreasesIt slowly decreases15%It is impossible to measureIt is impossible to measure10%Created by: Katarzyna Dąbrowska. Statistics based on 7263 answers in 2 languages »astronomy riddles » Play astronomy quiz and see all the questions.