根据“Saturn has seven main rings.”可知,土星有七个主环。故选C。 (2)题详解: 细节理解题。根据“The gravity (重力) pulls these things and makes them fall down to the planet. ”可知,重力拉着这些东西,让它们落下来。故选A。 (3)题详解: 细节理解题。问句是选择疑问句,不用Yes或No作答,...
Saturn's rings are made of ice and rocks. The gravity (重力) pulls these things and makes them fall down to the planet. About 600,000,000 of these things fall every minute! They could fill an Olympic-sized swimming pool in half an hour Scientists don't have an answer to how the ...
How far is Saturn from Earth right now? Saturn’s rings are incredibly thin. This image was made from photos taken by the Cassini spacecraft. The rings are seen edge-on and appear as a thin blue line. The dark bands across the upper half of Saturn are shadows made by the rings. The...
Saturn (土星) has beautiful rings. Of planets in the solar system, Saturn’s rings are the biggest and brightest. According to scientists, however, these rings will one day disappear completely. How did Saturn get its rings in the first place? Scientists have no sure answer. But there’s ...
How many kilometres is Saturn in diameter?What do we have to use to see the rings of Saturn?How many moons of Saturn have we discovered?What is the largest moon of Saturn? 相关知识点: 试题来源: 解析 (1)No.(2)It's about 120, 536 kilometres in diameter.(3)A telescope.(4)33.(...
question. The research associate at Stanford (Calif.) University's Space, Telecommunications and Radioscience Laboratory (STARLab), who works out of the NASA Ames Research Center, has discovered the first direct and unambiguous detection of basketball-sized meteoroids striking one of Saturn's rings....
However, scientists are still uncertain exactly how old the rings are. Different researchers come up with different results. Some say they're billions of years old, while others say they're as young as 100 million years old. New research in Nature Geoscience suggests that the rings cannot be...
it would disintegrate—be torn apart, and thus add more material to the ring system.And there's another way new material might be added to Saturn's rings—an asteroid crashing into one of the moons.This hypothesis is supported by the fact that some of the many rings are a bit reddish ...
Saturm(土星) has beautiful rings. Of planets in the solar system, Saturn's rings are the biggest and brightest. According to scientists, however, these rings will one day disappear completely.How did Saturn get its rings in the first place? Scientists have no sure answer. But there's a ...
A few years later, Giovanni Cassini saw that Saturn has many rings, not just one. 【In 1980, the Voyager I spacecraft took pictures of Saturn and some of its 44.(moon). In 2004,Saturn got its very own 45.(visit),the Cassini spacecraft named 46.the astronomer. After a 7-year ...