Earth-sized exoplanet in ‘habitable zone’ is one of closest yet to our worldNASA spacecraft also spots an alien world orbiting two stars. By Alexandra Witze Twitter Facebook Email Honolulu, HawaiiAccess options Access through your institution Access Nature and 54 other Nature Portfolio journals...
- **A.类似地球**:未提及系外行星必须类似地球,仅讨论位置,排除。 - **B.太阳系之外**:与原文定义完全一致,正确。 - **C.绕太阳运行**:太阳系内行星绕太阳运行,而系外行星不属于太阳系,排除。 - **D.有生命发展**:原文未涉及生命存在与否的内容,排除。 题目完整且有明确依据,故答案为B。
An Earth-sized planet orbiting a star beyond our solar system is likely covered with volcanoes, researchers have concluded. The planet is technically an exoplanet, meaning it is beyond our solar system. In ascientific paper outlining the discovery, researchers dubbed it LP 791-18 d. It was di...
Large ground-based telescopes, earth-circling and sun-circling satellites all collect different types of information. Because exoplanets are so far away and very close to stars, it is very difficult to see them directly. 【小题3】 For example, when an exoplanet moves between its star and us...
Exoplanet starshade to hunt Earth twins is backThe petal-shaped umbrella is designed to block starlight and allow an Earth-sized planet's own light to shinedoi:10.1016/S0262-4079(13)62306-4GrossmanLisaNew Scientist
That could change, though, now that International Astronomical Union (IAU) has launched a competition that will allow the public to name 305 exoplanets -- planets that are outside our solar system -- discovered before Dec. 31, 2008. The exoplanets together with their host stars and exoplaneta...
(3)___ For example, as a planet circles a star, it pulls on it and causes it to shake. As the star moves unsteadily, it changes the wavelength of the light we see. Measuring these slight changes is another method of discovering planets. (4)___ When an exoplanet moves between its ...
This distant exoplanet has an atmosphere ‘like something out of science fiction’ Watch SpaceX’s Starship spacecraft crash to Earth Space station video shows ‘cosmic fireflies’ high above Earth This doesn’t mean that COROT was a failure, La Marle points out. After all, the mission went...
Scientists are expecting greater insight into exoplanet atmospheres using Webb and other new telescopes, examining their chemistry from the perspective of Earth. Oxygen, more plentiful in Earth's atmosphere than methane, is another potential biosignature. It is also fed into Earth's atmosphere via bi...
Planets that orbit other stars are referred to asExtrasolar Planets (Exoplanet) Planets that no longer orbit a star are called Rogue Planets. All the Gas giants in the Solar System have rings, not just Saturn. The largest planet in the Solar System is Jupiter. ...