Delving into the Vast Abyss: Fifteen Unsolved Mysteries in Science that Leave Experts Scratching Heads

Dark Energy

If dark matter wasn't perplexing enough, there's also dark energy - a mysterious force that's causing the universe to expand at an accelerating rate. This strange energy makes up about 68% of the universe, dwarfing the mere 5% composed of normal matter. Understanding dark energy is crucial as it could reveal the fate of our universe. Will it continue to expand forever? Or will it eventually collapse in on itself? The answer lies in the enigma of dark energy.