It appears that scientists have all studied on our planet already, but this is not the case. I have collected 11 interesting mysteries that are not yet rational. 

1. How do cats produce the sound purr?

Cats rumble, but nobody knows how when they feel happy. You wouldn't even hear their heart rhythm when they rumble! 

Scientists say cats make their vocal cords vibrating sound. Its frequency accelerates cure and reduces pain, so cats rumble when they are depressed or hurt. 

2. Where did certain creatures come from?

There are many species with no ancestors. Nobody knows how amphibians evolved from fish, because the first land animals had their legs and heads well-developed. 

It is also said that dinosaurs were extinguished 65 million years ago from a natural cataclysm. Simultaneously, mammal species were found from the night. 

3. Does cows possess a magnetic compass?

Scientists used Google Earth to study tens of thousands of images of grazing cows and to find a weird pattern. As they eat or drink, 70 percent of cows turn their heads north or south. All continents, irrespective of the field, weather, and other factors, have this observation. 

4. What was the rain 'gelatin?'

In August 1994, in Oakville, Washington, an uncommon phenomenon occurred. Jelly-like compounds came from the sky rather than rain. Dozens of persons had symptoms of flu the next day. 

The substance was analyzed by scientific researchers: it contains two bacterial types, one of which is normally found in the human digestive system. The bacteria could not connect to the strange epidemic. 

5. What's darkness?

Roughly 27% of the world is dark matter. It is not electromagnetic radiation that emits or interacts, and so it is not possible to recognize it. 

The first Dark Matter theories did appear about 60 years ago, but scientists have not yet submitted direct proof. 

6. How many solar system planets are there?

Since Pluto as an official planet was excluded, 8 planets are supposed to exist. Beyond Pluto, the Kuiper belt is made up of icy objects. In this area, scientists found thousands of objects even larger than Pluto. 

They were also aware of a great gap in Kuiper's rim - an unknown planet as large as Earth pulled all the stones out of the rim. 

7. Why are people left and right? Why is it?

The majority (70%-95%) of human beings are on the right and a minority (5%-30%) is on the left. An unknown number is ambidextrous. 

Genes have an influence, but there is no identification of a "left-hand gene." Social environments also affect: some of them take a right hand when left-handed children are made to write with their right hand. 

8. Why did megafauna extinguished?

Around 10,000 years ago, giant animals, known as megafauna, vanished. 

Some people believe the megafauna has been killed by climate change, but there is no clear evidence. Another theory suggests that the animals died of hunger. Reserved mammals full of undigested greens were found in Alaska. 

9.why do people dream

Some think that dreams are discrete images and waves of the brain. Subconscious desires, problems, and experiences are regarded by others. 

Oneirology is called the study of dreams. Researchers claim that dreams symbolize stuff hidden deep within the psyche of the human person, but nobody knows exactly what. 

Ten. What's the roar of space?

In 2006, scientists heard loud mysterious grumbles as they studied young stars. While sound cannot travel in space, radio waves can travel through space. But from which do they come? The investigators only know that the waves were not part of stars or known cosmic phenomena. 

Eleven. Why do we have various types of blood?

Blood types of blood cells have various antigens. They are signs of anticorps that destroy the body's foreign cells. But scientists don't have a reply to why it is different. 

They are linked to diseases and immunity. There are suggestions. Persons with blood type B are more likely to have E. The risk of malaria deaths is lower for people with type O blood.

Share This Article for others to learn

Content created and supplied by: Brenda254 (via Opera News )