According to paragraph 6, how did astronomers learn that the universe is expanding? A. By measuring the distance between galaxies B. By observing the movement of stars within galaxies C. By studying the wavelengths of light from distant galaxies D. By comparing the sizes of different galaxies ...
Astronomers hope to find a plane ike ours.⑤()5. We will not discover life on another planet.(2)思有所悟——思维品质培养Do you want to be an astronomer in the future? Why? 2读有所获——阅读技能提升How do we know al the things about space?Astronomers make many discoveries! They ...
Do you ever think about the universe? It’s amazing, isn’t it? How big is it? What’s out there? Are there other planets with life on them? We don’t know yet, but we’re trying to discover more. Some people work hard to learn about the universe. They are astronomers (天文学...
A hundred years ago, Edwin Hubble used newly built telescopes to show that the universe is filled with not just stars and clouds of gasbut also countless galaxies. As telescopes have continued to improve, the sheer number of celestial objects humans can see and theamount of dataastronomers need...
故选C。长难句分析】To calculate the Hubble constant(常数),whichquantfies the expansion rate of the universe, astronomers usually lookat distant objects andfind out two things: how far away they are andtheir redshift, which is the degree to which the object's light hasstretched as it passed...
evidence that the universe is expanding. It is not the galaxies themselves that are expanding but the space between them. What is happening is analogous to inflating a balloon with small coins attached to its surface. The coins behave like galaxies: although they do not expand, the space betwe...
Light from the gravitational wavebut some astronomers believe that it is evidence ofis hard to get.unknown physics. The events that make gravitationalB. The LIGO team hasn't known blackwaves don't always produce light. Even if they do, it canhole connections.be hard to spot. But in 2017,...
Galaxies in every corner of the universe have been sending out photons, or light particles, since nearly the beginning of time. Astronomers are now beginning to read this extragalactic background light
8.According to paragraph 6, how did astronomers learn that the universe is expanding? A. By measuring the distance between galaxies B. By observing the movement of stars within galaxies C. By studying the wavelengths of light from distant galaxies ...
The article talks about how lasers, powerful magnets, plasma experiments, and other tools are being used to complement data from telescopes. It states that physicist Bruce Remington noticed computer simulations of a supernova explosion were nearly identical to turbulent mixing of plasma in laser ...