Unsolved Science Mysteries From 2017

Here are some puzzlers that still have experts scratching their heads.

We learned a lot in 2017, but some circumstances remain a mystery.

From why octopus suddenly walked out of the ocean, to what's inside the mysterious void of an ancient Egyptian pyramid, these were some of 2017's most mysterious finds in our natural world.

Ancient's Egypt's Great Pyramid has inspired theories, both conspiratorial and historical, for centuries, and a new discovery of a mysterious void has added to the mystique. The void is 153 feet long and 26 feet tall, and it lies above the corridor leading to the burial chamber of Khufu, an Egyptian pharaoh.

Is the void one or several rooms? What's inside it? What purpose did it serve? These are questions that remain to be answered.

Archaeologists have yet to access

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