問題一覧
1
what is atmosphere
It is made of the layers of gases surrounding a planet or other celestial body.
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Trickster
person who deceives people
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Messenger
was a NASA robotic space probe that orbited the planet Mercury between 2011 and 2015, studying Mercury's chemical composition, geology, and magnetic field. The name is a backronym for "Mercury Surface, Space Environment, Geochemistry, and Ranging", and a reference to the messenger god Mercury from Roman mythology.
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MESSENGER acronym
Mercury Surface, Space Environment, Geochemistry, and Ranging
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Daytime temperature of Mercury in Fahrenheit.
800f
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Roman mythology
myths of ancient Rome as represented in the literature and visual arts of the Romans.
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Communication
information is exchanged between individuals through a common system of symbols, signs, or behavior
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Proximity
nearness in time and space or relationship
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Commerce
exchange of goods or services among two or more parties.
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Density
measurement of how tightly a material is packed together.
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radius
measure of distance from the center of any circular object to its outermost edge or boundary.
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Mischievous
behaving in a way, or describing behavior,
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Mercury's average orbital speed
47 km (29 mi)
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exosphere
outermost layer of a planet or moon's atmosphere.
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Mercury's axis of rotation is tilted
2 degrees
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With a radius of 1,516 mi (2,440 km)
Mercury is a little more than 1/3 the width of Earth.
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Latin
language of ancient Rome and its empire, widely used historically as a language of scholarship and administration.
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Mercury days
88 earth days
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diameter of mercury
4,879 km
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Perihelion
point in a planet or Earth's orbit when it's closest to the sun
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Basin
geologists call craters larger than about 186 miles (300 kilometers) in diameter.
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solar days on mercury
176 days
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Mercury spins slowly
completes one rotation every 58.65 Earth days.
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temperature on Pluto can be as cold as
-375 to -400 degrees Fahrenheit
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Solar Day:
time it takes for a planet to rotate on its axis once relative to the Sun. It's the familiar day length we use based on sunrise and sunset.
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Night temperature of mercury
180 degrees C
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mercury
smlallest planet in our solar system and nearest to the sun
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aphelion
This is the point in a planet or Earth's orbit when it's farthest away from the sun.
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The average temperature across the entire planet is around
333°F (167°C)
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daytime
the time after sunrise and before sunset while it is light outside.
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Width of the US State of Arizona
310 mi (500 km)
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Average distance of Mercury from the sun
35,983,095 mi
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dynamic
continuous and productive activity or change
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mercury’s’ perihelion
46 million km
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melting point
the temperature at which it changes state from a solid to a liquid
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melting point of lead
621.5 °F
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Mercury's outer shell, (called the mantle and crust)
400 km (250 mi) thick.
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Cunning
people are good at planning something so that they get what they want, especially by tricking other people, or things that are cleverly made for a particular purpose
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Nighttime
the time after sunset and before sunrise while it is dark outside
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Caloris Basin
It is the largest impact crater on Mercury
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Mercury has a large metallic core with a radius of about
1,289 mi (2,074 km)
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Gods/Goddesses
were powerful beings who personified natural phenomena, human emotions, and abstract concepts. They weren't necessarily all-powerful or all-knowing, but held immense influence over the world and human lives.
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diameter of Rachmaninoff crater
290 kilometers (180 miles)
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Sidereal Day
This is the time it takes for a planet to rotate on its axis once relative to the stars. It's basically how long it takes for a specific spot on the planet to face the same direction in space again.