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Earth History

70,000 Years Ago Alien Star Visited Earth Solar System and Our Ancestors Have Seen it Glowing Reddish in The Sky

In prehistory time a star entered our solar system and space comets and asteroids were dragged from the outer towards its center.

 

About 70,000 years ago, when the human species was already on Earth, a small reddish star approached our solar system and space rocks (comets and asteroids) were dragged from the outer solar system towards its center.

At a time when modern humans were beginning to leave Africa and the Neanderthals were living on our planet millennia ago, Scholz’s star – named after the German astronomer who discovered it – approached less than a light-year from the Sun. It is likely that they saw this star as a faint reddish light glowing overhead in the area around the Big Dipper – also known as The Plough.

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Nowadays it is almost 20 light-years away, but 70,000 years ago it entered the Oort cloud, a reservoir of trans-Neptunian objects located at the confines of the solar system.

This discovery was made public in 2015 by a team of astronomers led by Professor Eric Mamajek of the University of Rochester (USA).

Now two astronomers from the Complutense University of Madrid, the brothers Carlos and Raúl de la Fuente Marcos, together with the researcher Sverre J. Aarseth of the University of Cambridge (UK), have analyzed for the first time the nearly 340 objects of the solar system which became trapped in unusual open V-shaped orbits around the sun. Not the typical elliptical orbit we normally think of.

Researchers found that the trajectory of some of these objects, known as Oort cloud comets, was influenced by the passage of Scholz’s star.

“In principle,” explains Carlos de la Fuente Marcos, “one would expect those positions to be evenly distributed in the sky, particularly if these objects come from the Oort cloud; however, what we find is very different: a statistically significant accumulation of radiants. The pronounced over-density appears projected in the direction of the constellation of Gemini, which fits the close encounter with Scholz´s star.”

The moment in which this star passed close to us and its position during prehistory coincide with the data of the new investigation and in those of Mamajek and his team. “It could be a coincidence, but it is unlikely that both location and time are compatible,” says De la Fuente Marcos, who points out that their simulations suggest that Scholz´s star approached even more than the 0.6 light-years pointed out in the 2015 study as the lower limit.

The close fly-by of this star 70,000 years ago did not disturb all the hyperbolic objects of the solar system, only those that were closest to it at that time. “For example, the radiant of the famous interstellar asteroid` Oumuamua is in the constellation of Lyra (the Harp), very far from Gemini, therefore it is not part of the detected over-density, “says De la Fuente Marcos. He is confident that new studies and observations will confirm the idea that a star passed close to us in a relatively recent period.

Scholz´s star is actually a binary system formed by a small red dwarf, with about 9% of the mass of the Sun, around which a much less bright and smaller brown dwarf orbits. It is likely that our ancestors saw its faint reddish light in the nights of prehistory.

The results published in the MNRAS Letters journal.

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