The catastrophic death of a star is referred to as a supernova. After the deutrium in the star-cloud ignites and begins to release prodigious amounts of energy, it is only a matter of time until the surrounding hydrogen begins to fuse and the celestial body becomes a true star. With a...
it drops down in wavelength. All of this light pushes outward on the star, and counteracts the gravitational force pulling it inward. A star at this stage of life is held in balance – as long as its supplies of hydrogen fuel lasts. ...
The sun is a star. What is the main source of the sun's energy? A. Water B. Gas C. Nuclear fusion D. Electricity 相关知识点: 试题来源: 解析 C。太阳的主要能量来源是核聚变。选项 A 水不是太阳能量来源;选项 B 气体不是主要能量来源;选项 D 电不是太阳能量来源。
what i want to give t what ive got to say what if hes an angel what if that star is what immortal hand or what in hell are you what is fund what is done cant be what is he doing what is the grace of what is the will of g what is to be learned what is under heaven what...
Lois is terrified. All of her past intimate relationships have been, well... Federal Disasters. Before she can voice her fears to Clark, not one, but two of her past disasters come back to haunt her in ways she never could have expected. Throw in a threat against the President of the...
This means that other parameters, such as the AGN duty cycle time scale or radio properties, could dictate whether the outflows will be confined to the central 1 kpc region or extended over several kpc scales. Figure 4. Results from the work of Singha et al. [159]. (a) A bar chart ...
1 - The Pleiades (all night) The Pleiades in the January night sky. (Image credit: Chris Vaughan/Starry Night) In the evening during early January, the prominent open star cluster known as the Pleiades, the Seven Sisters and Messier 45, is climbing the southeastern sky. The stars of its...
The magnetic cycle is believed to be caused by a magnetohydrodynamic (MHD) dynamo process in the solar interior, where the flows and the magnetic fields interact in the strongly turbulent convective zone. The intrinsic features of the solar interior, e.g., the stratification, the turbulence and...
Star dunes, however, correspond only to low directionality (high variability) conditions as expected (Fig. 2b). The compiled data also reveal a previously unobserved trend: dune height is inversely related to flux directionality; i.e., dunes with low directionality are relatively taller (Figs. ...
根据A star is a ball of hot, glowing gas.可知恒星是一团炽热发光的气体,故答案为A star is a ball of hot, glowing gas. (3)句意:为什么我们能感受到太阳的热量并看到它的亮光?根据The sun is the closest star to Earth. That is why we feel its heat and see its bright light.可知是因...