百度试题 结果1 题目The diameter of the Earth is about _. A. 12742 kilometers B. 6371 kilometers C. 10800 kilometers D. 14000 kilometers 相关知识点: 试题来源: 解析 B。这是关于地球直径的常识,6371 千米是地球的大致直径。反馈 收藏
Earth Radius in KM Those who have had the pleasure of jet-setting or flying around the world know that the world is a huge place, but the diameter of the Earth adds a little complexity to the equation. We’ve all wondered how huge the world is from one end to the other at some poi...
NASA's telescope system only detects asteroids atleast 50 meters in diameter(直径), which is just about the size of 2012DA14. But the meteor was much smaller, which made it harder to see.But what if we do see an asteroid that is headed right for the Earth?There are several possible ...
000 times wider than those on Earth, which typically have a diameter of 10 to 30 meters. Lower gravity and its effect on volcanism explain these outstanding dimensions (with total volumes exceeding 1 billion of cubic meters on the Moon). Tubes as wide as these can be longer than 40 kilome...
awith a diameter of five meters, of northern hemisphere of the earth 与五米直径,地球的北半球[translate]
On the wind-blown steppes of Central Asia, in an isolated corner of Kazakhstan, there's a large pentagram, measuring roughly 1,200 feet (366 meters) in diameter, etched into Earth's surface. The five-pointed star surrounded by a circle, located on the southern shore of the Upper Tobol ...
The Earth is the third planet from the Sun and the only planet known to have life on it. It is the fifth largest planet in the solar system and has a diameter of about 12,756 kilometers. The Earth's surface is made up of land and water, with about 29.2% of the surface land and...
Update: Earth-size radio telescope opens its eyeThe article reports on the unveiling of the e-VLBI that creates in effect a telescope with a diameter of 11,000 kilometers by the European VLBI Network (EVN). It is stated that the VLBI increases the resolution of a pair telescopes by ...
The blackbody (diameter of 57 mm, emissivity of 0.95, minimum distance with the sensors of around 40 mm) will be operated at several set-point increments of 5 K from 323 K to 343 K. The pre-flight absolute calibration of each ERS sensor will also be carried out with the BB 3200 pg ...
Diameter:512 x 49.2 feet (512 x 15 meters) Although the individual size of each of these telescopes isn't as grand as some of the previous entries, the anticipated scale of this construction is much greater. Chosen for their extremely remote lands, the Karoo region of South Africa and Murc...