A.FAST can send signals into the universe to help find life.B.FAST is a dish-like radio telescope travelling in the universe.C.The astronauts in Shenzhou-16 will work in space for several months.D.The three ast
D.Ittravelsfarawayfromsomegalaxies.(3)WhatcanweknowaboutChina'sspaceexplorationfromthepassage? ___ A.FASTcansendsignalsintotheuniversetohelpfindlife. B.FASTis a dish-likeradiotelescopetravellingintheuniverse. C.TheastronautsinShenzhou-16 workedinspaceforseveralmonths. D.Thethreeastronautsareuniversity...
However most of the events we have found are blue and are either still rising or decaying slowly, on a timescale of years; the few spectra we have show AGN at z ∼ 1. We argue that these transients are background AGN microlensed by stars in foreground galaxies by a factor 10–100....
There are three different main shapes of galaxies that exist in our universe. The one you are probably most familiar with are spiral galaxies, like our Milky Way, which have two or more arms spiraling around a center core. Then there are the elliptical galaxies which have egg-like ...
throughout the universe. We know this because we see it concentrated within galaxies and absent in the gaps between galaxies. However, when we talk about the density of matter in the universe, we're imagining spreading everyatomin the universe (three-quarters of which are hydrogen) evenly ...
”“Well, according to the studies on astronomyn.天文学华生沉思了一会儿。⑩ galaxy /'gaelaksi/ n.it tells me that there are millions of galaxies and“从天文学角度来说,它星系potentially billions of planets [5]. According to the告诉我有数百万个星系和数①potentiallypositions of the stars, I ...
C① Are we alone?What's out there?Looking up at the stars,people have always wanted to learn more about space and scientists have been working hard to find the secrets of the universe.Here we ’ re going to go through a timeline of the important moments of space exploration. ② What ...
and all these galaxies are moving away from one another. 我们可以看到在它之外还有多个星系,所有这些星系都在彼此远离。 So multiple galaxies… moving away from each other… led to the theory… 所以多个星系相互远离导致了理论… MALE STUDENT:The big bang theory? 学生:大爆炸理论? MALE PROFESSOR:...
Nebulas, or vast clouds of gas that often condense to become new stars, also have impressively large sizes. NGC 604 in the Triangulum Galaxy is commonly cited as one of the largest; it's roughly 1,520 light-years across. Galaxies are collections of star systems and everything inside those...
Moon phases reveal the passage of time in the night sky. Some nights when we look up at the moon, it is full and bright; sometimes it is just a sliver of silvery light. These changes in appearance are the phases of the moon. As the moon orbits Earth, it cycles through eight distinct...