10 Mysterious Things We Have Discovered In Space

FRB 121102

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Fast radio bursts (FRB) are strong radio signals we sparingly receive from space. Although scientists cannot confirm the origin of these signals, researchers think that they are emitted by exploding stars or neutron stars getting consumed by black holes. FRBs often disappear as soon as they appear. However, not FRB 121102.

Scientists have received over 150 signals from FRB 121102 since they received the first signal on November 2, 2012. Scientists have traced these FRBs to a distant galaxy three billion light-years away even though they cannot confirm the specific source.

According to one theory, the signals are from a neutron star. However, another theory says that the FRBs could be emitted by technology used by aliens to power their spacecraft. Scientists do not believe that aliens deliberately sent these signals to contact us because they were released three billion years ago. Humans didn’t exist at the time, and Earth was filled with single-celled organisms.

The Dark Flow

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Astronomers have identified a group of distant galaxies traveling at a speed of over 1.6 million kilometers per hour (1 million mph). They do not know how or why the galaxies are moving that fast or where they are heading. Nevertheless, they have decided to call the mysterious motion “the dark flow.”

Astronomers suspect that the dark flow is caused by some massive but undiscovered celestial body pulling the group of galaxies toward itself. The galaxies are moving away from Earth for now, but scientists do not rule out the possibility of this phenomenon reversing direction and moving toward Earth in the future.

The Cow

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In June 2018, a bright flash suddenly appeared somewhere in the Herculesconstellation 200 million light-years away. The flash was so bright that it was equivalent to the light emitted by 10–100 supernovae. Scientists called it AT2018cow or “The Cow.” It remained bright for two weeks before it started to fade.

Scientists analyzed X-ray and ultraviolet waves emitted by the flash and concluded that it was caused by a black hole consuming a white dwarf. (A white dwarf is what is left when a small star dies.) However, others think that The Cow was actually caused by a black hole or neutron star formed after the death of a star.

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