The Solar System is at the center of a mysterious vacuum – How it happened

The Solar System is at the center of a mysterious 1,000-light-year space gap surrounded by thousands of young stars outside this void. Harvard scientists attempted to explain this mystery and reconstruct the evolutionary history of our galactic neighborhood, revealing how a series of events dating back 14 billion years led to the creation of this bubble we now call the “Local Bubble”. We have known its existence since the 70’s, however its origin remained a mystery.

The Local Bubble has low density and high temperature plasma and its ends have lower temperature and density inert gases and dust. Research shows that it was created by a supernova explosion millions of years ago. It still expands by 6.7 kilometers per second and is responsible for creating new stars on its perimeter.

As the supernova expands, it compresses the matter it comes in contact with, creating stronger bonds in the gas molecules in the interstellar medium, beginning to form young stars. Through reverse simulations, scientists went back in time and found that the explosion took place 14.4 million years ago, new stars were created and new explosions of large stars that did not live long followed.

We estimated that we had about 15 supernova explosions over millions of years to form the Local Bubble we see today.

And if you are wondering why our Solar System is in the middle of the bubble, researchers believe that it is clearly a coincidence.

When the first supernova that created the Local Bubble exploded, our Sun was far from in action. But five million years ago, the Sun’s orbit through the Galaxy led him into the bubble, and now the Sun is – just by chance – almost at the center of the bubble.

Unboxholics

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