My mother cooks well so the student will be able to enjoy delicious Chinese food. Whafs more, my father is an excellent driver and we will show the foreign student around some local places of interest in our area. I*d greatly appreciate it if I could have the chance to make friends ...
The discovery of planets around distant stars has become like space-shuttle launches—newsworthy but just barely. With some 50 extrasolar planets under their belt, astronomers have to announce something really strange to get anyone’s attention. Last week they did just that. Standing in front of ...
MALE PROFESSOR: Well, we have to consider its orbit.Gliese 581e orbits its host star in a much shorter period of time than the other planets in the system, meaning it's very close to the star. And therefore too hot for water, for an ocean. ...
Well, I think that sort of discovery is pretty far in the future, but it is an eventual goal. For now, the focus is on locating planets within a host star's so called "habitable zone", a zone that's a certain distance from its star ,because only planets within this zone could conc...
To persuade themselves of the planetary nature of these tiny objects, astronomers employed instead a statistical technique to "validate" them, showing that the likelihood they are planets is orders of magnitude larger than a false positive. Kepler-20e and 20f orbit their Sun-like star every 6.1 ...
The discovery of new planets is an exciting ___ in astronomy. A. event B. accident C. incident D. occurrence 相关知识点: 试题来源: 解析 A。本题考查名词的辨析。“event”表示“大事,事件”,新行星的发现是天文学中的一件令人兴奋的大事。“accident”表示“事故”;“incident”表示“小事件”;“...
Researchshowsthatthediscoveryofexoplanets(planetsoutsideoursolarsystem) haschangedsciencefiction(小说).Now,booksandmoviespresenttheseplanetsmore exactly,makingsciencefictionmoreimportantthanbefore.Imaginelearningaboutstarsinaclassroom.Youcouldstartwithcomplex(复杂的) picturesandfacts,oryoucouldwatchthemovieStarWarswhere...
One of the most convincing ways to verify that a dip in brightness is due to a planet is to find more planets orbiting the same star—a planetary system. Multi-planet systems also provide alternative ways to estimate the masses of the planets, as we will discuss in the next section. The...
Throughout the Earth’s annual revolution around the sun, there is one point of space always hidden from our eyes. This point is the opposite part of the Earth’s orbit, which is always hidden by the sun. Could there be another planet there, essentially similar to our own, but always ...
Early thinking about detecting extrasolar planets was largely circumscribed by the expectation that other solar systems would be similar to our own, the only known example at the time. Given this mind-set, transit detections were expected to be exceeding