They believe that we don't have enough scientific evidence to decide if there is life on other planets.In conclusion, I do not agree that there is life on other planets. Although the universe is very big, a planet with life needs very special conditions. Earth has exactly the right ...
【题目】The planet Mars is the【1】(close) and most similar planet to Earth. It is very interesting to scientists. For example, Mars has seasons with different weather, but other planets have【2】same temperatures all year round. Was there l【3】on Mars?
Until recently, it was difficult to search for signs of intelligent life in the universe. But now, powerful telescopes allow scientists to identify many more small planets—the size of Mars or Earth—in other solar systems. If these planets are similar to Earth, they might have intelligent lif...
Venus (especially) and Mars have atmospheric compositions strikingly similar to Earth's near surface volatile inventory. The relative amounts of carbon dioxide and nitrogen, the major gases, not only resemble Earth's but also resemble the volatile fractions of a putative meteorite mix. The ...
So, what would such a planet need? Student: Water? Professor: Yes, it need to be the right temperature to sustain liquid water. Student: And it would need to be a rocky planet, I mean, as opposed to a gas giant. Professor: OK, good. An Earth-like planet. Now, as to that, ther...
Some planets that circle these stars might be similar to Earth.Until recently, it was difficult to search for signs of intelligent life in the universe. But now, powerful tele-scopes(望远镜) allow scientists to identify(辨认)many more small planets-the size of Mars or Earth-in other solar ...
D.Earth:The Only Planet with Intelligent Life 63.Why was it hard to look for signs of intelligent life in the universe in the past?B A.There were not any smaller planets. B.There were not any powerful telescopes. C.The astronomers were not interested in them. ...
The Earth is a planet and it goes around the Sun.Seven other planets also go around the Sun.None of them has an environment with air,so people and things cannot grow.The Sun and its planets are called the solar system.The solar system is a small part of our galaxy. The stars we see...
How do you think the formation of Earth was similar to that of other planets in the solar system, and how may have it been different?Earth:Our planet Earth belongs to the Solar System, which contains a group of planets that orbit...
D. Earth:The Only Planet with Intelligent Life () 3. Why was it hard to look for signs of intelligent life in the universe in the past? A. There were not any smaller planets. B. There were not any powerful telescopes. C. The astronomers were not interested in them. ...