What is a red giant?

Red giant is a type of star. Its name is rather self -explaining: it is red due to its relatively low temperature and is one of the largest of all types of stars, 1,000 times bulky as our sun. Betelgeuse, Antares, Aldebaran and Arcturus are some known red giant stars visible from the ground with the naked eye.

The red giant is an aging star, and astrologers assume that our sun will become a red giant in about five billion years. Younger stars create energy through a hydrogen fusion that creates helium in the process, which gradually causes Helium the al hydrogen ratio inside the star. Hydrogen is in the core of younger stars, but as the star ages and uses its hydrogen, hydrogen is limited to the outer shell, while the core is only helium.

In this scenario, the helium core has no fuel for combustion, because the Helia fusion is only possible at very high temperatures, more than 100 million Kelvin. Therefore, the Helia core begins to contract while the hydrogen shell withAčeny to expand. The stars or brightness, or increases by a factor of 1,000 to 10,000, while the hydrogen shell begins to burn the cooler, receives a red look and becomes a red giant. Red light is the lowest temperature of visible light, while warmer light seems to be white or blue.

When our sun switches to the fusion of shell hydrogen and becomes a red giant, it will be the end of our solar system as we know it. The red giant on the site of our sun would achieve the current orbit of the Earth. However, in the aging process, the gravitational thrust of the Sun significantly weakens, causing all planets of the inner solar system, except for Mercury. While the country itself can survive the event, the ecosystem we know will be destroyed because the sun burns brighter, and the Earth's atmosphere will more resemble the atmosphere of the present Venus-too hot it to support life as it is on today's country.