How will the world disappear

Scientists agree that the Sun will be the cause of Earth’s demise unless something happens that we cannot currently predict, such as the sudden appearance of a black hole in the Solar System or planets falling out of their orbits. orbits and subsequent collisions. Today our star is an important source of gravity and energy, but one day it will turn against its planetary “children”, he writes 24 Channels.

The thing is, different stars die in different ways. Our Sun belongs to the luminary type, expanding during aging and turning into a red giant. The surface literally inflates like a balloon and absorbs the nearest planets in its path. First it will be Mercury, then Venus, and after that the Earth itself. We will actually be inside the Sun – the Earth will completely melt. Will be about 4.5 billion years later.

But the other news is that if we don’t leave the planet, we certainly won’t survive as a species until then. The thing is already about 1.3 billion years laterthat is, the natural evolution of the Sun would make Earth uninhabitable long before the planet found itself in a bubble of hot gas:

• First, the hydrogen required for nuclear fusion in the Sun will be depleted.
• After that, fusion will stop and gravity will take over.
• The helium core will begin to compress under the influence of gravity, causing the temperature to increase.
• This burst of heat would cause the Sun’s outer plasma layer to expand sharply.

The Sun will grow at least as large as the Earth’s orbit,
says Ravi Kopparapu, a planetary scientist at NASA’s Goddard Space Flight Center.

But even in the pre-expansion phase, our planet will feel intense heat (after 1.3 billion years). The oceans will evaporate in 2 billion years. After a short while the atmosphere will disappear. During this period, the Sun’s brightness will be almost 20% higher than now. Some microscopic creatures, such as extremophiles that live near hydrothermal vents on the ocean floor, can survive up to this point. But not people.

Eventually, the tidal forces of solar gravity will crush the Earth. Its remains will float through space until it is completely absorbed by the expanding. by the sun