The accurate determination of timescales for physical processes in the stars allows us to compare the properties of stars at different stages in their lives. In IAU Symposium 258 astrophysicists from around the world discuss the current state of the problem of estimating ages of stars and stellar...
Now, the question is: What is meant by "the settings of the stars"? In fact, there are three interpretations: The first interpretation is that between the stars there are distances that are too great to be conceived by the human mind. For example, the distance between the earth and some...
morphology of Horizontal Branch one obtains — in the frame of present knowledge of star-evolution —a suggestion for accepting high helium content ( Y -0.30) with a relatively small age (1–2×10 9 yr) for the evolving stars.Some correlations among lifetimes of evolutionaries stages are ...
China has successfully completed the three stages of the program.中国已成功完成该工程的三个阶However,(4)is anybody's guess.段。然而,谁也说不准中国在未来会取得什么进步。a how it laid the foundation/faun'derfn/ for future explorationa 它是如何为未来的探索打下了基础b that the data gathered ...
And today, more than ever, we need the many to flourish – not suffer at the expense of a few bright stars. Once a year, I go on a hike with my class, a mixed bunch of students. It is challenging. The fittest students realise they need to encourage the reluctant. There are ...
"Our kids can cooperate too. They're amazing kids," Sun said. She still remembers the children's sweat-soaked shirts and the mothers' eyes filled with tears of joy. Gradually, the ensemble became better known. By hosting their own "Star Concert," the children stepped onto bigger stages. ...
Related to Supergiant stars:Blue-white supergiant su·per·gi·ant (so͞o′pər-jī′ənt) n. Any of various very massive, large, and bright stars, such as Betelgeuse or Rigel, having a luminosity that is thousands of times greater than that of the sun. When a supergiant collapses...
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people than himself now moved towards their certain goal – the tomb. He had already passed sixty of the stages leading to it, and he had brought from his journey nothing but errors and remorse. Now his health was poor, his mind vacant, his heart sorrowful, and his old age short of ...
collapse of the gas cloud that became the Sun and solar system.（在太阳形成之前，一颗超新星出现在成为太阳的云附近；甚至有可能是这次爆炸产生的爆炸波触发了形成太阳和太阳系的气体云的坍塌。）通过验证各种各样的同位素，也证实了这样一个观点，所以也就表明铁-60和铝-26最初都是起源于同一个大恒星的。