G-type stars spend about 10 billion years converting hydrogen to helium. Astronomers call this themain-sequencestage of a star’s life. Our Sun is around 4.6 billion years old, and therefore about halfway along the main sequence. Compare the sizes and order of the Sun and the planets Where...
The Sun converts hydrogen into helium in its core. 1 Earth A symbol of ground or territory. The soldiers defended their Earth with bravery. 1 Sun The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusi...
For the past 4.6 billion years, our Sun has been happily fusion hydrogen into helium (with the help of quantum tunneling) to provide a steady source of heat that eventually made its third orbital rock habitable. Sadly, the Sun won’t always be this stable, and in ...
It will become too hot for life to exist.D. It will be nearly destroyed by nova explosions. 5The sun today is a yellow dwarf star. It is fueled by thermonuclear reactions near its center that convert hydrogen to helium. The sun has existed in its present state for about 4 billion, ...
sun solar wind/expansion kinetics of hydrogen and helium near sunIn general, solar wind models have treated a plasma consisting of hydrogen-ions and electrons. However, already the first measurements of the properties of the interplanetary medium taken in 1962 by Mariner 2 had indicated that a-...
hydrogen and helium C. carbon dioxide and water vapor D. iron and nickel 相关知识点: 试题来源: 解析 B。太阳主要由氢和氦组成。“oxygen and nitrogen”是氧气和氮气,“hydrogen and helium”是氢和氦,“carbon dioxide and water vapor”是二氧化碳和水蒸气,“iron and nickel”是铁和镍。
The sun consumes hydrogen to produce energy and helium, approximately 5 billion kilograms, or 5 million tons, every second! The sun is a main sequence...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
The meaning of SUN is the luminous celestial body around which the earth and other planets revolve, from which they receive heat and light, which is composed mainly of hydrogen and helium, and which has a mean distance from earth of about 93,000,000 mile
C. hydrogen and helium D. gas and space dust 5. When will humans disappear from Earth? A. in a 1,000 years from now B. in 100 million years from now C. in a billion years from now D. no one knows 6....
The sun is losing mass in several ways. The main way the sun is losing mass is through nuclear fusion in its core. Fusion is changing hydrogen to helium, the hydrogen used weighs slightly more than the helium produced. The difference is changed to energy with a little help fromEinstein'sE...