There are eight planets(行星) in our solar system(太阳系). Here is what you need to know about them.Mercury is the smallest planet in our solar system. It is the closest planet to the Sun. It is hot during the day. I
根据第一段第一行“There are eight planets in our solar system.”(我们的太阳系有八颗行星。)和最后一段第一行“Pluto looks and acts like most planets.”(冥王星看起来和运行像大多数的行星。)以及最后一段第二行“Scientists used to consider it a planet. But that changed in 2006.”(科学家过去...
What are the inner planets made of? How do scientists classify stars? What is the moon made of? What makes a star explode? What elements formed terrestrial planets? Stars are held together by What kind of stars become white dwarfs? What is Comet Hyakutake made of? What is a circumpolar ...
Professor: OK. We've been discussing the planets in our solar system and how some of the ones farthest from the sun were discovered. 教授:好,我们一直在讨论我们太阳系中的行星,以及距离太阳最远的一些行星是如何被发现的 Well, today I'd like to turn to what are called exoplanets and how rese...
Spiral galaxies are made of stars, planets, moons, asteroids, comets, black holes, dust, gas, and any other type of stellar object found in any...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
二、 阅读理解A There are eight planets (行星) in our solar system. Here is what you need to know about them.Mercury (水星) is the smallest planet in our solar system. It is the closest planet to the Sun. It is hot during the day. It is freezing cold at night.Venus (金星) is ...
“Are we alone? What’s out there?” Looking up at the stars, people have always wanted to learn more about space, and scientists work hard to find answers. They make vehicles to carry brave people into space to find out the secrets of the universe. Apollo 11 Moon Landing Before the ...
Evidence of past volcanic activity has been found on most planets in our solar system and on many of their moons. We have an article titled "Active Volcanoes of Our Solar System." Beyond Earth, cinder cones are believed to exist on the Moon, Mars, and Venus. [1] These beliefs are base...
In particular, the C/O ratio is proposed to be a key determinant of the composition of solids that condense from disk gas and are incorporated into planets. Also, planets may leave chemical signatures on the photospheres of their host stars by sequestering heavy elements, or by being accreted...
Northern lights captured from Nottingham, U.K. during the May 2024 solar storm.(Image credit: Daisy Dobrijevic) Are there northern lights on other planets? Yes! Auroras aren't unique to Earth. They also appear on other planets with magnetic fields and atmospheres. For example: ...