How old is the sun now? Is he middle-aged or old?

How old is the sun now? Is he middle-aged or old? The age of the sun is about 4.6 billion years, and it can still burn for about 5 billion years. The sun is the closest star to the earth, with medium size and brightness. According to its radius and temperature, it should belong to g 1 dwarf. With magnetic field and rotation, it is the largest celestial body, containing nearly 98% of the mass of the solar system. It takes 109 Earth to fill the cross section of the sun, and its interior can accommodate more than 6.5438+0.3 million Earths. Visible bright surfaces are called photospheres. Above the photosphere is a 5000-kilometer-thick inner atmosphere called chromosphere. Above the chromosphere is an extremely thin high-temperature corona, which can extend to the Earth and beyond. The activity of the sun comes from its core. The core temperature of the sun is as high as 654.38+05 million degrees Celsius, and the pressure is 34 billion times that of the earth. Nuclear fusion is taking place here. Fusion causes four protons or hydrogen atoms to produce an alpha particle or helium nucleus. The mass of alpha particles is 0.7% less than that of four protons, and the remaining mass is converted into energy and released to the surface of the sun, and light and heat are released through convection. It takes millions of years for the energy in the sun's core to reach its surface. 700 million tons of hydrogen is converted into helium every second. In this process, about 5 million tons of net energy is released, so that the sun can shine. The age of the sun is about 4.6 billion years, and it can still burn for about 5 billion years. In the last stage of its existence, helium in the sun will be transformed into heavy elements, and the volume of the sun will begin to expand until it engulfs the earth. After the red giant stage of 1 100 million years, the sun will suddenly collapse into a white dwarf-the last stage of the existence of all stars. After trillions of years, it will eventually cool down completely.

Seek adoption

Is the sun a teenager, a teenager or a middle-aged person? When people reach middle age, doesn't your book say that the sun has lived for 5 billion years and will live for another 5 billion years? In another 5 billion years, the sun will first become a red giant, and then the inside of the sun will collapse into a very small white dwarf.

What is the life span of the sun? The sun is middle-aged now. The life span of the sun is 65.438+0 billion years-65.438+0.2 billion years. Now the age of the sun is about 5 billion years. .

What are the advantages of comparing childhood, adolescence, middle age and old age? Are you asking about the benefits of old age?

Old age-one is that I have more experiences and memories, and then I have worked all my life and accumulated some money for the elderly, so I am more leisure.

Is the sun middle-aged or adult now? Still in middle age

According to the research of modern astronomy, the life span of the sun-like stars in the universe is generally around 654.38+00 billion years, while the sun has existed for 4.5 billion to 5 billion years. According to the calculation of human life span, the sun is now in middle age, so its life span is about 5 billion years.

What movies are named after adolescence, middle age and old age? According to people's physiological age (calculated by development and physiological function) and psychological age (calculated by brain function and psychological aging degree), life can be roughly divided into the following periods: birth to 5 years old, infancy (including newborn, infancy, infancy and preschool), 6 ~ L 1 year old, childhood (school age),12 ~ L.

How long can pomeranians live? I'm five years old now. Middle age or old age? Its mother is only in her early teens! A 5-year-old dog is middle-aged.

Generally speaking.

The dog's age multiplied by 7 is the algorithm of human age.

5*7=35 years old.

The dog is middle-aged

What movies are there about middle age? I recommended it according to what my parents like to see! It's best to know what kind of drama you want. Please adopt it. Oh, thank you!

Tv series:

The concubines in the palace, the latest hit, and the beautiful times of daughter-in-law, dwelling in humble abode, laughing, women don't cry, watching happiness.

Movies:

Mei Lanfang, Tough Guy, Love Call Transfer 2 Love, Crossing the Enchantment, Tasting Men and Women, Breaking the Quantum Crisis 007, Witness, Peach Blossom, Legend of Fire, Golden Army, New Age of Life and Death, Painted Skin, Keeping Call, Li Mi's Guess, Starting Today, Sword Butterfly and Super Typhoon.

1997 What is the nominal age now? Actually, it is 16 years old. After this year's birthday, it will be 15 years old.

Ask, analysis of senile depression: hello, senile depression, hypertension, coronary heart disease, diabetes and various cancers. 1 Some patients are induced in the family, and many patients have no obvious etiology. Guidance: Symptoms: forgetfulness, powerlessness, self-reproach, inferiority, emotional instability and excitability, depression in thinking activities, mental aspects: withdrawn, depressed, taciturn, slow in action, unwilling to move, and taking small steps. Thinking: the content of thinking is poor and slow; Melancholy, pessimism and anxiety; Nervous and desperate, I feel that living is boring, and I have suicidal thoughts because I am tired of this world. Emotion: I am sad, depressed and sad all day, feel empty when I have time, have no interest in doing anything, and fidget; Cold interpersonal relationship, loss of original interests, physical and mental decline, reduced ability. Physical symptoms: general fatigue, listlessness, tinnitus, dizziness, numbness and insomnia, loss of appetite and indigestion; Constipation, impotence and hypofunction; Chest tightness, tight throat, stomachache, self-doubt of various diseases, frequent sighing or shouting, etc. I wish you health! See more answers >>