1450.Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, keeping Earth's climate warm and habitable. 大气中的温室气体,如甲烷和二氧化碳,捕获了部分热量,使地球气候保持温暖和适宜...
Scientists have found over 5,000 exoplanets since the first such world was confirmed orbiting a sunlike star in 1995. We explore the ones most similar to Earth.
Here are the 5 exoplanets that astronomers have rated most habitableAndrew Norton
Number 10 are comets.Comets continually orbit around star systems, but these naturally-occurring propelled masses of ice and rock are very dangerous.第十位是彗星。彗星不断地围绕恒星系运行，而这些由自然产生的动力推动的冰块和岩石是十分危险的。From studying comets in our own star system, we know t...
根据文章第二段Earth is the only known planet that stays in a perfect position from our Sun to support water in a liquid state.Astronomers call this perfect distance from a star the "habitable (宜居的)" or "Goldilocks zone".(地球是已知的唯一一颗距离太阳很近的行星...
“Even if the subsurface ocean isn’t habitable, we can learn a lot about prebiotic chemistry on Titan, and Earth, by studying the reactions on Titan’s surface,” said Neish. “We’d really like to know if interesting reactions are occurring there, especially where the organic molecules mix...
The capital of the island is Chora, a picturesque fishing harbor with colourful fishing boats, taverns and hospitable residents, the most habitable settlement in Antiparos. The main road across from the pier is the commercial centre of the area with many small shops for locals and tourists. ...
Our experiments to find extraterrestrial life are predicated on the assumption that it is most likely to be found on so-called "habitable worlds." These ar... S Shostak - es 被引量: 18发表: 2010年 Mars and Earth: Origin and Abundance of Volatiles In our own immediate neighborhood, Mars ...
根据第四段中“For an atmosphere with Earth’s atmospheric pressure, CO2 levels as high as 1 per cent can cause sleepiness in humans(在与地球大气压相当的大气中,二氧化碳浓度高达1%就会导致人类嗜睡)”,由此推知“once we reach levels of 10 per cent CO2(一旦我们达到10%的二氧化碳水平)”人们可能会...
3You only have to look at the fossilized remains of the dinosaurs to see the benefit of finding another habitable planet. While Mars doesn’t have the right conditions to call it home just yet, there’s always the concept of terraforming (地球化) — changing the environment of a planet to...