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The age of the universe is______: 13.8 Billion years
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The origin of earth dates back to approximately______: 4.6 billion year
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The whole Earth can be covered by ______ geo-stationary satellites: 3
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Total number of stars in Solar System is ______: 1
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Total number of planets in Solar System is ______: 8
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Total number of dwarf planets Solar System is ______: 5
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Total number of moons in Solar System is ______: 194
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Total number of asteroids in Solar System is ______: 796289
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Total number of comets in Solar System is ______: 3583
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The diameter of the sun is______: 1392684 KM
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The equatorial circumference of the sun is______: 4370005 KM
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The mass of the sun is______: 1.99*10^30 KG
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The surface temperature of the sun is______: 5500 C
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The number of moons of Mercury is______: 0
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The number of moons of Venus is______: 0
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The number of moons of Mars is______: 2
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The number of moons of Jupiter is______: 67
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The number of moons of Saturn is______: 62
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The number of moons of Uranus is______: 27
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The number of moons of Neptune is______: 14
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The number of moons of Pluto is______: 5
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The diameter of Mercury is______: 4879 KM
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The diameter of the Earth is______: 12756 KM
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The diameter of Mars is______: 6779 KM
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The diameter of Venus is______: 12104 KM
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The diameter of Neptune is______: 49244 KM
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The diameter of Jupiter is______: 139820 KM
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The diameter of Uranus is______: 50724 KM
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The sun is a main-sequence ______ star: G2V
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The sun’s surface area is ______ times wider than the Earth’s surface area: 109
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A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of______: Silicate rocks or metals
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Which planet of the solar system has the shortest day? Jupiter
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Which planet of the solar system is known as “Sister of Earth”? Venus
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Which planet of the solar system has the shortest orbit? Mercury
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Which planet of the solar system has the longest orbit? Neptune
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The Earth’s axis is tilted at ______ degrees: 23.5
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Stars are balls of______: Gases
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The terrestrial planets of our solar system are______: Mercury, Venus, Earth, Mars
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A gas giant is a large planet composed mostly of gases, such as hydrogen and helium, with a ______ rocky core: Relatively small
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The gas giants of our solar system are______: Jupiter, Saturn, Uranus, Neptune
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Pluto is a ______ dwarf planet: Prototype
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The dwarf planets of our solar system are______: Ceres, Pluto, Eris, Makemake, Haumea
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Pluto was confirmed as a dwarf planet in______: 2006
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Hubble’s classification of galaxies is also known as______: Tuning fork
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______ the dog, was the first animal to actually go into moon’s orbit on November 03, 1957: Laika