0:00Eight things scientists still cannot explain.
0:03The last one is the biggest mystery of all.
0:061. The origin of life.
0:08The greatest mystery of all is life itself.
0:11Scientists still cannot fully explain how non-living chemicals first came together
0:15to create the earliest living organism.
0:18We can study what life does, but not exactly how it began.
0:22For now, the origin of life remains one of the biggest unanswered questions in science.
0:272. The wow signal.
0:29In 1977, scientists picked up a powerful radio signal from deep space.
0:34It was so unusual that one astronomer wrote,
0:37Wow! next to the data.
0:39And that is how it got its name.
0:41The signal lasted only 72 seconds and never appeared again.
0:45No one knows what caused it.
0:473. Quantum entanglement
0:49Quantum entanglement is one of the strangest ideas in physics.
0:53When two particles become linked, changing one can instantly affect the other,
0:58even if they are far apart. Scientists know it happens, but they still do not fully understand why it works this way.
1:054. Ball lightning.
1:07During thunderstorms, people sometimes report glowing balls of light floating through the air, even into houses.
1:14This strange phenomenon has been described for centuries but scientists still cannot fully explain how it forms why it moves the way it does or why it suddenly disappears 5 The placebo effect Sometimes people improve even when they are given fake treatments
1:30In some cases, belief alone seems to trigger real physical changes in the body. Scientists
1:36can measure the effect, but they still do not completely understand how the mind influences
1:40healing so powerfully. 6. Gravity. Gravity is one of the most powerful forces in the universe,
1:47but it is also the weakest of the major fundamental forces. It keeps planets in orbit
1:51and galaxies together, yet scientists still do not fully understand why it behaves the way it does,
1:58or how it fits perfectly into modern physics. 7. Consciousness. Scientists can track brain
2:04activity, map neurons, and study how the brain reacts to the world. But they still cannot fully
2:10explain how those signals become thoughts, emotions, memories, and awareness. In other words,
2:16they know the brain works, but not how it becomes a mind.
2:208. Dark Matter
2:21Dark matter is thought to make up most of the matter in the universe, yet no one has ever
2:26directly seen it. Scientists know it is there because galaxies move as if something invisible
2:31is holding them together. Even after decades of research, telescopes, and experiments,
2:36they still do not know exactly what it is. Which one blows your mind the most?