They form the face of “the man in the Moon.” Question: What is the largest known asteroid in the solar system, discovered by Italian astronomer Giuseppe Piazzi and named after the Roman goddess of agriculture? Answer: Ceres is the largest known asteroid in the solar system and was the first to be discovered, by Giuseppe Piazzi of the Palermo Observatory on January 1, 1801. Maria are the largest topographic features on the Moon and can be seen from Earth with the unaided eye. Question: What surface features, thought by early observers to be large bodies of water, form the facial features of “the man in the Moon”? Answer: In actuality, the Moon’s maria (singular: mare) are huge lava flows marked by ridges, graben, rilles, and faults and are devoid of any water. Jupiter, Saturn, Uranus, and Neptune are called giant planets or Jovian planets. Question: Which of these planets is not a Jovian planet? Answer: Of the eight currently recognized planets of the solar system, the inner four (Mercury, Venus, Earth, and Mars) are called terrestrial planets. The names of Uranus’s four satellites come from English literature, three taken from William Shakespeare’s plays. It was eventually named according to the tradition of naming planets for the gods of Greek and Roman mythology Uranus is the father of Saturn, who is in turn the father of Jupiter. Question: Which planet is named after one of the greatest of the Greco-Roman gods but has moons named after characters in plays by William Shakespeare? Answer: Uranus was discovered in 1781 by the English astronomer William Herschel. Venus’s diameter is about 12,102.5 km, or 94.9 percent of Earth's diameter at the Equator, while its mass is 81.5 percent that of Earth. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!Įverything in Space in a 25-Minute Quiz Question: Which planet is nearly Earth’s twin in size and mass? Answer: Venus is nearly Earth’s twin in terms of size and mass.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.
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COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.From tech to household and wellness products. This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.
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