What chemical elements compose Uranus' core? What is the main optical element of a refracting telescope? What does the temperature and composition of a star tell us? What makes up star cluster? How do scientists classify stars? Name the gases that make up most stars?
A white dwarf, despite continuing to shine, is a dead star. It is primarily composed of carbon and oxygen, having depleted its hydrogen supply and expelled most of its other elements with its outer layers.Answer and Explanation: A white dwarf star emits white light and appears white when ...
The reason a star glows is that it uses nuclear fusion to fuse hydrogen atoms into helium nuclei producing both heat and light. Scientists can determine what elements make up a star by looking at the emissions spectra of the light they produce. This is an emissions spectrum for one element....
Dwarf (intransitive) To become (much) smaller. Giant Very large. Dwarf To hinder from growing to the natural size; to make or keep small; to stunt. Giant A man of extraordinari bulk and stature. Giants of mighty bone and bold emprise. Dwarf An animal or plant which is much below the...
A. White dwarf. B. Red giant. C. Black hole. D. Pulsar. 相关知识点: 试题来源: 解析 C。解析:“One of the most fascinating is the black hole at the center of the galaxy.”,银河系中最迷人的天体之一是黑洞。反馈 收藏
It is in these types of objects that the heaviest elements in the Universe are formed. Additional resources Asimulationshows how stars exchange material through a stable gravitational point via a process called Roche lobe overflow.Another simulation, created by NASA, shows what happens in a binary...
Learn and share the most exciting discoveries, innovations and ideas shaping our world today.SubscribeSign up for our newslettersSee the latest storiesRead the latest issueGive a Gift Subscription Follow Us:Return & Refund Policy About Press Room FAQs Contact Us International Editions Advertise Accessib...
eight solar masses. Planetary nebulae are a type of supernova remnant formed when Sun-like stars first swell up to enormous sizes and then explode. When it happens to the Sun, its mantle will be flung outward to form a planetary nebula, while its core will linger on as a white dwarf. ...
Makeup (by mass): 71 percent hydrogen, 27 percent helium, 2 percent other elements Average temperature: 5,800 degrees Kelvin (surface), 15.5 million degrees Kelvin (core) Average density: 1.41 grams per cm3 Volume: 1.4 x 1027 cubic meters Rotational period: 25 days (center) to 35 days (...
It is also said that the elements that make up the planets, the carbon, etc., can only have been created from resulting debris of an exploding star going Supernova. So, if the Sun had been a double star system, the companion star would have all gone now. ...