百度试题 结果1 题目What does our planet mean here? A. The sun. B. Mars. C. The moon. D. The E. arth. 相关知识点: 试题来源: 解析 D 反馈 收藏
A planet obeys the above rules that define what a planet is by IAU standards. A moon orbits a planet, not the Sun. The moons of Mars, Deimos and Phobos are believed to have been asteroids. They strayed too close to Mars, whose gravity pulled them into an orbital path. The Earth's ...
How the Earth got its moon is a long debated question. Thegiant impact theory– which states that the moon formed from the a collision between the early Earth and a rocky body called Theia—has become the front runner among the explanations. But the details around how this happened are blur...
Atthehalfwayhouse,“Ienjoyedgettingto knowpeople whoatfirstsightseemeda world awayfromme,”saidSimon.“ThenIrealizedhow muchwehadincommon.Wetalkedandjoked.I likedspendingtimewiththem.”OneofSimon?s favoritememories:taking12oftheresidentstoa ChicagoCubsbaseballgame,wheretheiramazementmirrorsSal?sinthebook....
根据第一段“What if the Moon had never existed? For starters we know that the geophysical and climatological history of the Earth would have been different. Although there is still large uncertainty about how the Moon was formed, the most currently favored theory describes a disastrous collision ...
After Earth and moon were formed, big rocks crashed into them. There were also a lot of volcanoes that spouted dust and ash. They spread hot liquid rock(or lava)over parts of Earth and the moon. On Earth much of the lava ...
Earth is the planet of life. Running, crawling or flying, life abounds everywhere.地球是一个满是生命的星球。奔跑着的、爬行着的或飞翔着的，到处都是生命。But for all this beautiful diversity to have proliferated, Earth has had to provide a favourable environment for around four billion years. ...
Measuring the temperature on the moon Related articles: —How was the moon formed? —What is the average temperature on Earth? —How big is the moon? NASA'sLunar Reconnaissance Orbiter(LRO) provides the best knowledge about the moon's temperature. The mission launched in 2009 and one instrume...
In addition to the swelling along the joining line, a diametrically opposite one on the other side of the Earth is formed due to the centrifugal force. The bulges move with the rotation of the moon around the Earth. An observer on the Earth's surface as the bulge approaches will see the...
It's widely accepted that the Moon was formed from the debris of a collision between an infant Earth and a planet roughly the size ofMars, posthumously named Theia. Early in the Solar System's formation around 4.5 billion years ago, many emerging planets and protoplanets would have had overl...