The universe is a vast space full of mysteries. Many theories have been proposed but the conclusion cannot be found because of the lack of technology. Blackholes, Galaxies, planets, asteroids, clusters, nebulas, etc.., are not only part of the universe but there are still many that we didn’t found yet.
Here are the some of top mysteries that are yet to be solved in the universe.
10. Is there life beyond Earth?
Whenever there is a debate about the universe, the major question which everyone has is “Are there any life forms living in the cosmos beyond the Earth?”. This is one of the hardest topics for scientists to explain.
The famous scientist Stephen Hawking believes that there is a chance of alien life because of the presence of the vast space of the universe and an infinite number of planets.
According to Stephen Hawking "If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans".
9. How Big bang started?
The big bang is the theory that is proposed for the creation of the universe, but the question is “what caused the big bang?”.
Scientists and cosmologists have been trying to solve this mystery for a long time. Some it is felt that the Big bang is not the only cause of origin.
Some scientists held the view that the Universe would someday re-collapse, eventually leading to another bang.
8. Black knight satellite:
A UFO-like thing that is revolving around the earth in an unpredictable orbit path. It is said that the first signal from this satellite is received by Nikola Tesla in 1899.
It is said to be that this UFO is orbiting the earth for more than 13000 years.
But some say that it is a space derby that is floating in the space but for some, it seems too real.
7. Formation of a galaxy
The formation of the galaxies is one of the debatable questions which remains a mystery for a long period. Many theories have been proposed on the creation of galaxies but still, but it is debated.
According to a cosmologist, the birth of the galaxies is due to the expansion of the universe and the gravity of the objects.
6. Is there an end to the universe?
There is a theory that the universe is created from the Big bang and someday it could end. Many theories have been proposed for the cause of the end of the universe.
However, it will take more than a hundred billion years for that, according to cosmologists.
But it is believed that the universe will end one day.
5. Boötes void
It is a void or a gap that is 330 million light-years in diameter, which is 0.27% of the observable universe.
Scientists cannot find the answer to the presence of this huge void. Astronomers found that there are some galaxies present in that void roughly 60 to 2000.
4. Causes of the end of the Universe
The theories that have proposed for the end of the universe are,
- Big crunch - instead of expanding forever, matter in the Universe reaches a point where it starts to decrease over time, it could cause gravity to become the dominant force.
- Big Rip - The first theory claims the Universe will end with a Big Rip, as the pull of the Universe's expansion gets stronger than the gravity it contains. This would tear apart galaxies, followed by black holes, stars, and even our planet.
- Big Freeze – In this theory the universe will lose its energy and heat and will freeze to the end.
3. Is there another universe?
Multi-verse is one of the biggest mysteries in which it is believed that there are many universes rather that our universe.
The mysteries of multi-verse are in the beginning and yet to be solved.
2. Dark matter
Dark matter is composed of particles that do not absorb, reflect, or emit light, so they cannot be detected by observing electromagnetic radiation.
Dark matter is material that cannot be seen directly. We know that dark matter exists because of the effect it has on objects that we can observe directly.
Dark matter and dark energy make up 95% of the universe. That only leaves a small 5% for all the matter and energy we know and understand like planets, stars, galaxies, nebulas, clusters, black holes, etc..,.
1. Dark energy
Dark energy is the rate of expansion of our universe to accelerate over time, rather than slow down.
That's contrary to what one might expect from a universe that began in the Big Bang. Cosmologists and astronomers in the 20th century learned the universe is expanding.
Dark energy is caused by energy inherent to the fabric of space itself, and as the Universe expands, it's the energy density the energy-per-unit volume that remains constant.
As a result, a Universe filled with dark energy will see its expansion rate remain constant, rather than drop at all.
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