Hello Everyone! How are you all? How did you find the last article on 100 amazing and interesting facts about the universe – part 1? Haven’t you read yet? first read that by clicking on the link above.
Now, I hope you must have read that article which was about the first 10 out of 100 amazing facts of the universe. Today, I am going to let you know the next 10 amazing facts of the universe.
Our universe is full of amazing and mysterious things. All of those amazing and mysterious things have their own set of facts, and we will be discussing 10 of those today.
Again, for your information, these facts have been taken from the book 100 AMAZING FACTS ABOUT UNIVERSE by Faizan Aziz. You could get this book from the link above.
So, without wasting any time, let’s start by the next 10 amazing and interesting facts of the universe out of the 100.
11. White Noise
We all know what is white noise? Do we know? Yeah! absolutely we must not know by the word white noise, but we all must have experienced this at least once in our lifetime.
Have you ever used analog television and tuned it? If you had done it in the past and you had not tuned it properly then, you must have listen a sound just like in the video below…
This is white noise. Around 1% of that is radiation left over from the Big Bang, better known as the Cosmic Microwave Background (CMB). This interference between overlapping signals actually allowed Arno Penzias and Robert Wilson to discover the CMB in 1965.
Its characteristics are somehow similar to the thermal noise. These noises can be experienced at 15 MHz frequency by highly directional antenna pointed toward the sun or the center of the Milky Way Galaxy
12. Quasar Query
Quasars occur when gas swirls around a black hole very quickly, and friction causes it to heat up, emitting light.
Astronomers have discovered a group of 73 quasars that are over 6.5 times larger than the average quasar group.
This structure is over four billion light-years wide, and actually cannot be explained by the Theory of General Relativity. Theoretically, it shouldn’t even exist.
Pulsars are magnetized neutron stars that spin incredibly fast and blast out a beam of radiation, kind of like a lighthouse beacon.
The fastest known pulsar is PSR J1748-2446ad, located around 18,000 light-years away in the constellation Sagittarius.
Though it is of average size for a neutron star, it spins an astonishing 716 times per second. This is nearly a quarter of the speed of light and exceeds what theories say is possible.
14. Number of Stars
If someone asks you, how many stars are there in our solar system? You would answer by saying 1 that is our sun. How about the number of stars in the milky way galaxy? Any Idea?
There are at least 100 billion stars, just in the Milky Way galaxy. Our sun is one of these 100 billion stars.
Scientists calculate that there are at least 100 billion galaxies in the observable universe, each one brimming with stars.
There are more stars than grains of sand on all of Earth’s beaches combined.
15. First Exoplanets
The very first proof of a possible exoplanet, orbiting Van Maanen 2, was noted in 1917, but that was recognized then.
The first suspected scientific detection of an exoplanet occurred in 1988. Shortly afterward, the first confirmation of detection came in 1992, with the discovery of several terrestrial-mass planets orbiting the pulsar PSR B1257+12.
In 1995, the first planet beyond our solar system orbiting a main-sequence star was discovered. This planet is orbiting around the star 51 pegasi, hence named as 51 Pegasi b.
Now, thousands of planets orbiting sun-like stars, also known as exoplanets, have been found.
16. Size of Milky Way Galaxy
Do you know, what is the size of Milky Way Galaxy? Ok, leave this for now, what is the fastest object in the universe? Light! yes, it’s light the fastest object in the universe.
How much time do light takes to cross the Milky Way? Any guess. Light, being the fastest object in the universe takes around 150,000 years to 200,000 years to cross the Milky Way. This is the size of the Milky Way.
The Milky Way is a huge city of stars which is so big that even at the speed of light (which is fastest!), it would take 150,000 years to 200,000 years to travel across it.
17. Dark Energy and Dark Matter
The universe, we could see like, the sun, Earth, moons, other planets, and all the other celestial objects are made of Protons, Neutrons, and Electrons compressed together into an atom.
The most surprising discovery of the 20th century is that this ordinary matter shares merely 5% of the entire mass of the universe.
The rest of the universe seems to be made of a mysterious, invisible substance known as dark matter which shares 25% and a force that repels gravity known as dark energy sharing a huge amount of 70%
18. The Big Bang
How the universe was created? This question shook the mind of legendary scientists and philosophers until the theory of Big Bang proposed.
The Big Bang model states that the earliest state of the Universe was an extremely hot and dense one and that the Universe subsequently expanded and cooled.
As per this theory, space and time diffused together 13.799±0.021 billion years ago and the energy and matter initially present have become less dense as the Universe expanded.
19. Number of Galaxies in the Universe
According to the estimates of scientists that there are around 2 trillion galaxies in our universe and each galaxy is having a diameter of 1000 parsec to 100,000 parsecs ( 1 parsec = 3 light-years) and separated by distance on the order of million parsecs. e.g. Milky way is separated by its nearest galaxy andromeda by a distance of 780,000 parsecs.
20. Can You See the Past?
I have a question for you, can you see the past? Well, I am not going to answer it now, not here. Expecting the answers from you. Answer this in the comment box.
Don’t worry keep signed and I will answer this in the next segment the 100 amazing and interesting facts of the Universe, wait till then, and research.
Well, we had learned about the 10, sorry 9 amazing facts about the universe out of 100 today. We discussed the Cosmic white noise, Quasar, Pulsars and many other amazing and interesting facts.
I will be sharing such interesting facts about the universe and the solar system. So, if you do not want to miss it, please subscribe to the newsletter. You will be regularly updated by such amazing facts. Till then, thank you for visiting my website.
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