Jakarta –
Events on our planet have been going on for several billion years. Young stars have a special position in our quest to discover life elsewhere. Research shows, when old stars like it Sun die, extinction on Earth will be replaced by new life.
One factor that appears to be important is the stellar wind. magnetic field Earth protects us from the continuous flow of particles coming from the Sun.
This particle scattering is much worse when the star is young and gradually improves. Studies of stars like the Sun, or even older stars, show that they tend to experience changes in the strength and complexity of magnetic fields, something that has a large impact on stellar winds.
Catastrophic eruptive events become less likely as these Sun-like stars age, making the survival of life around these objects more likely and also providing greater possibilities for the development of advanced civilizations.
As cited by the Astrophysical Journal Letters, up to a certain point, stars like the Sun or older ones are stars whose conditions are ideal for supporting life on a planet. But remember, the Sun and many similar stars are destined to become red giants one day.
When a star runs out of hydrogen in its core, it first compresses, ignites helium, and then swells. That’s when it became a red giant.
It is very likely that as the Sun expands, its outer layers expand into Earth’s orbit. Even though the plasma density is very low, being inside a star is not good for life.
The red giant phase is also characterized by the release of strong, hot stellar winds from the now large star, pushing the habitable zone further away.
This may be good news for the moons of gas giants, but not for rocky planets like Venus and Mercury. At this point they would surely be wiped out. What about Earth and Mars? According to the scientific scenario, both will run out. The entire Earth will be inhospitable to life. Aka, the Earth will end!
New life
Researchers are also curious about what happened next. The sun, having become a red giant, loses its layers and all that remains is a compressed core that undergoes degeneration.
This dead star is called a white dwarf. Without stellar winds and with high stability over billions of years, white dwarfs are good places for life, as long as the planets survive the red giant phase and life evolves after the white dwarf appears.
Research shows that the transition from ordinary stars to red giants to white dwarfs is too fast for life to adapt, unless there is a way to protect and relocate entire planets.
Therefore, according to scientists, older stars and white dwarfs should be studied as potential hosts for life. But it seems unlikely that any life form could survive undisturbed on a world as its star changes and evolves.
Watch the video “NASA will ‘touch’ the sun, 7 times closer than before”
(rns/fairy)
2024-01-13 22:44:40
#sun #dies #earth #dies