Earth, there is such a planet that can reveal our destiny

This may be what fate has in store for Earth as well. This is it Exoplanet Similar to our planet, which is about 4 thousand light years away from us and revolves around a planet White Nana. The discovery has just been made by astronomers at the University of California, Berkeley, and it’s really exciting, because it gives us the opportunity to take a peek at future For the solar system and Earth, once the Sun dies and completes its evolution into a white dwarf. New studio Posted on pages Nature astronomy.

Exoplanet

Astronomers were able to describe this distant planetary system thanks to gravitational microlensing. In fact, about 26,000 light-years away, on the same line of observation from Earth, a very large, bright star briefly aligned itself. When light from the farthest star passes through… White Nana (about 4,000 light-years), and its path was curved by the gravitational field, resulting in an impact Zoom inmore than a thousand times. Thus, this allowed us to calculate that the mass of the exoplanet is approximately equal 1,9 volts That of the Earth and revolves around its star at an approximate rate double Earth’s distance from the sun.

Of stars and white dwarfs

Let’s remember, briefly, that white dwarfs are what stars like to turn into insole When they die. In particular, they run out of hydrogen fuel, become less stable and swell to an enormous size, entering a phase Red giant. Eventually, the star expels all of its outer matter and the core collapses underneath gravity To form a dense object, its bright light would not be generated by fusion, but by residual heat from its collapse. That nucleus is the white dwarf.

Earth’s fate

Some predictions about the future of our solar system indicate that… insole It will begin to turn into a red giant in about 5 billion years, and it may swell until it reaches the orbit of Mars, thus engulfing Mercury and Venus, and perhaps even Terra. “Models currently disagree on whether it is possible to avoid being swallowed by Earth because we do not know precisely enough the rate at which the Sun’s mass is lost by the red giant.”commented on Science Alert Author Kiming Zhang. However, new data show that the white dwarf has a mass of about half that of the Sun, suggesting that it was originally quite similar to a white dwarf. insole. The current orbital distance between the exoplanet and the white dwarf indicates that it was previously the same distance between Earth and the Sun. “The planet’s current orbit of 2.1 AU is exactly where Earth is expected to be after the Sun becomes a white dwarf.” recalls the expert.

A life elsewhere

Although we still don’t know what will actually happen to our planet, will it be destroyed or will it be able to escape and survive? He survivesAs this recent discovery of an orbiting Earth-like world suggests White NanaThe consolation is that after billions of years life on Earth will have long disappeared, or we may have found a way to create new life elsewhere. “When the Sun becomes a red giant,… Habitable area “It will move around the orbit of Jupiter and Saturn.”Zhang concluded. “I think that in this case, humanity could migrate there.”.