However, the light it gives out is white. " 知,太阳下午发出的是白光。 2. D 细节理解题。 从“ Many movies present the asteroid belt as a dangerous place. It is crowded with rocks that run into each other. Unluckily, these movies are wrong. The asteroid belt is a very lonely area. In fa...
The Asteroid Belt is located in an area of space between the orbits of Mars and Jupiter. That places it between 2.2 and 3.2 astronomical units (AU) from the Sun. The belt is about 1 AU thick. The average distance between objects in the Asteroid Belt is quite large. If you could stand...
5.What does the professor imply about the asteroid belt? A. It is farther from the Sun than Uranus. B. Bode believed it was made up of small stars. C. It is located where people expected to find a planet. D. Ceres is the only one of the asteroids that can be seen without a ...
What does the professor imply about the asteroid belt? A . It is farther from the Sun than Uranus B . Bode believed it was made up of small stars C . It is located where people expected to find a planet D . Ceres is the only one of the asteroids that can be seen without a...
Blue.3. Because the asteroid belt is a very lonely area and it is not oftenthat you get to see even one asteroid crashing into another.4. You wouldn't be able to see any man-made structures from themoon, but you may be able to see some city lights.5. When we use the Internet,...
However, the light it gives out is white.The earth's atmosphere makes the star appear yellow and the sky appear blue. This is called Rayleigh scattering(瑞利散射). The sky is, in fact, as clear as glass.Myth 2: The asteroid belt(小行星带) is dangerous.In many movies, the asteroid ...
Well, imagine again because the Asteroid Belt is nothing like that. In fact it is a very lonely place for an asteroid. Astronomers estimate that the average distance between two asteroids in the asteroid belt is about 600,000 miles (966,000 km). This is about 2.5 times the distance betwee...
The protoplanet Vesta, another large body in the asteroid belt that Dawn examined from orbit, has a family of asteroids that orbit near it. These "vestoids" are believed to have been blasted out by a powerful impact long ago, which created a huge crater that was first spotted by the Hub...
Despite the pandemic, NASA is on track to launch its Mars rover, Perseverance, this July from Cape Canaveral, Florida. Its central mission will be to search for evidence of previous life on Mars.
In many movies,the asteroid belt is often described as a dangerous place.It is crowded with rocks that run into each other.However,these movies are wrong.In fact, all the asteroids together weigh only about four percent of the moon.That's why scientists are excited when they happen to see...