Astronomers say they have discovered the largest "planet killer"-sized asteroid(小行星) in eight years, and that the huge space rock will cross the Earth's orbit.They have found three rather large asteroids, one of which, named 2022 AP7, crosses the Earth's orbit, making it a potentially...
NASA VR: On the Surface of Planet TRAPPIST 1-d (360 view) Editors’ Recommendations Exoplanet with eccentric orbit discovered in the habitable zone of a red dwarf New Earth-sized planet discovered 300 light-years away could support life Teenage NASA intern discovers single exoplanet orbiting two...
Most exoplanets have been discovered by the U.S. Kepler space telescope. Those exoplanets are located away from Earth at a distance of more than 500 light-years. In 2018, NASA launched a new planet-hunting satellite, the Transiting Exoplanet Survey Satellite (TESS), to target exoplanets closer...
根据 文章第一句The Earth is the third planet from the Sun, and the fifth-largest of the eight planets in the Solar System.(地球是太阳的第三颗行星,也是太阳系八个行星的第五大行星)可知A项正确 结合选项 A.地球是太阳系八个行星中的第五大行星。B, 地球上大约有十亿年的生命。C, 太阳的未来对...
结果1 题目The earth is a planet. It has land, water and air. What is the largest part of the earth? A. The land B. The water C. The air D. The mountains 相关知识点: 试题来源: 解析 B。地球表面大部分被水覆盖。反馈 收藏
The massive find promises to help scientists better understand how all rocky bodies—including our own planet—came to be.
句子 The largest terrestrial planet, Earth has a diameter only one quarter as great as the diameter of the smallest Jovian planet, Neptune, and its mass is only one seventeenth as great. 问题 句子分析(俗称“长难句分析”)是训练提高基础阅读能力的有效手段。我们通过对托福(TOEFL)、雅思(IELTS)、...
“Just when we think there is nothing left to discover on planet Earth, we find a massive coral made of nearly 1 billion little polyps, pulsing with life,” said Enric Sala, National Geographic explorer in residence and founder of Pristine Seas. ...
Earth is the fifth largest planet in the air polluti solar system. It's just one l__ in the million liv universe (宇宙), but it's the only home of it's an inv humans. Humans have2 been living beings. W on the earth for millions of years. for peopleThe earth has been changing ...
1)Saturn is ___ planet after Jupiter, with a diameter nearly ten times those of Earth. 答案是 A.the second largest 如果 选B.the second largest of后面 应该是 the 加可数名词复数2)He works harder than ___ in his class. 如果选A.any one else 的话 应该是 anyone else所以答案是 B.any...