Five speculations about mysterious space waves: the alien signal is extremely low

According to a report on the BBC website on January 11, humans received mysterious signals from distant galaxies. When a fast radio storm reaches a telescope on Earth, they emit a few milliseconds of light and then disappear. In the past 10 years, astronomers have detected dozens of such signals. They have just announced the discovery of more signals, including rare repetitive fast radio burst signals.

We don't know what they are or where they come from, but there are five suspicious objects here:

A fast-rotating neutron star

When a star explodes and dies, it becomes a fast-rotating neutron star. Astronomers believe that fast-rotating neutron stars found in high magnetic fields may produce such strange signals.

Professor Ingrid Stalls, an astrophysicist at the University of British Columbia in Canada, said: "Things like neutron stars actually fit this condition."

She said: "However, we still don't know what physical phenomena have produced such a huge radio storm."

Two stars being merged

Another possibility is that the two neutron stars are colliding with each other.

Astronomer Shriash Tendukal of McGill University in Canada said that this is one of the mainstream theories, but this theory only applies to cosmic signals that have only appeared once, because the stars are destroyed in the process. .

He said: "This is a radical event and does not apply to recurring fast radio bursts."

In the past ten years or so, most of the fast radio bursts captured by telescopes have only appeared once and then disappeared.

However, it has been found that two elusive signals reappear - there must be a different interpretation of this.

Blitzar star

The Blitzar star is a fast-rotating neutron star that collapses under its own mass to form a black hole.

Again, this ends with the destruction of stars, so it is impossible to produce a repetitive signal.

Black hole

Many theories involve black holes—from neutron stars falling into black holes to black hole collapses or dark matter hitting black holes.

Extraterrestrial life

While some believe that these signals are entirely natural, others speculate that they may be evidence of alien activity.

Styles believes that this possibility is very low.

In an interview with the BBC, she said: "They come from almost every corner of the universe, and the distances are not the same, so they must be related to many different galaxies."

She said: "It is totally unimaginable. There are so many different alien civilizations that decide to send the same signal in the same way. This seems extremely unlikely."