Astronomers Suggest Earth May Be Trapped Inside a Giant Cosmic Void in Space

For decades, astronomers have been studying the universe with advanced technology, but even before that, our ancestors thousands of years ago had already developed their own ways of understanding the cosmos.

From the Sumerians, Assyrians, and Babylonians, all the way to the current civilizations, we have tracked the movement and existence of our sun, moon, stars, neighboring planets, and other celestial bodies.

Over time, astronomers have developed various theories ranging from galaxy clusters, dark matter, dark stars, and odd cosmic radiation patterns, to now with a new theory stating that Earth may be Trapped Inside a Giant Cosmic Void in Space. There are a lot of problems and unexplained phenomena with our current cosmological understanding, and if this were proven true, it would solve and change a lot of them.

What Is a Cosmic Void?

Cosmic void refers to regions of the universe that have a less dense amount of celestial bodies like galaxies, stars, and planets, compared to the rest of the universe. This could sometimes be hundreds of millions of light‑years across, or even wider.

Presented at the National Astronomy Meeting in Durham, a new study suggests that Earth may be trapped in one of those cosmic voids, dubbed the KBC Void (after Keenan, Barger & Cowie). It is believed to be about 2 billion light years in diameter.

Read more: National Astronomy Meeting

The Mystery of the Universe’s Expansion Rate

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Scientists believe that the universe is expanding rapidly, but the measurements of cosmic expansion differ depending on how they’re taken. The two methods that are primarily used are the local measurements and early data from the cosmic microwave background.

Local measurements rely on nearby stars, supernovae, and galaxies to determine the distances and velocities. By calculating how far away they are from us and how fast they are moving away, scientists can estimate the Hubble constant, which is used to describe the rate of expansion of the universe.

The other method measures the afterglow of the Big Bang, or the cosmic microwave background, CMB, that permeates the entire universe. The important thing to know is that they are producing completely different results, where the CMB-based method is slower than the local measurements, and this problem was named “Hubble tension”.

What the Cosmic Microwave Background Tells Us

If the two methods do not match or are at least close to each other, the problem may be about our fundamental understanding of the universe or a mistake in the formula for calculations.

However, if the new theory that states the Earth may be existing inside a 2 billion light years wide cosmic void, then it would explain how other things around us look like they’re moving away faster, even if the universe is not expanding as quickly as scientists calculated.

In other words, the Cosmic Microwave Background-based method produces a slower expansion rate but may be more accurate, since a local cosmic void will artificially boost local expansion measurements. However, this statement totally depends on whether the new theory will be proven with enough evidence.

Read more: Live Science

Why This Matters for Cosmology

The Earth being in a cosmic void will have heavy consequences for our understanding of the cosmos. We may need to redo a lot of the theories that we developed, such as the Copernican Principle, which states that humans and our planet are not in a special place in the universe.

It will also change the scientists’ models of the Big Bang all the way to the fate of the universe, because many predictions like the Big Rip and the Big Crunch are based on how fast the universe is expanding, which is measured by the Hubble Constant.

Is Earth Inside a Giant Void? Here's the Shocking Theory!

Author's Final Thoughts

The idea that the planet may be trapped in a giant cosmic void that spans 2 billion light-years sounds like science fiction, but scientists are slowly beginning to back it up with data and evidence.

This new theory will need a lot more time, improvement of technology, and peer reviews, but if proven true, it could explain many of the problems in our current understanding of the universe.

Whether we are inside a cosmic void or not, one thing is for sure: the more we learn about space, the more amazing and insane it gets. But hopefully someday, we can explore all of it in person.

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