We know about earth more than any other planet as we live on it. But here, I will tell you many interesting and surprising facts about earth that you might not be knowing. Have you ever thought that the planet Earth is a natural spaceship for us. We are enjoying the ride in space at extremely high speed of 30 kilometres per second which is the average orbital speed of earth. You will find it interesting that We are not just revolving around the sun, our whole solar system that contains Sun, all the member planets including earth, orbits around the centre of Milky Way galaxy. We are moving at an average velocity of 828,000 kilometres per hour. But this revolution path is so large, that even at this high velocity, it still takes us about 230 million years to make one complete revolution Around The Milky Way.
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The planet Earth was formed somewhere around 4.54 billion years ago. It is currently the only known planet to support life. Earth is the most dense planet in the solar system. Actually the density of earth differs in each part of the planet. For example core is denser than the earth's crust. The magnetic field of Earth is very powerful. The reason behind this is the Nickel-iron core of the planet combined with its Rapid rotation. This powerful magnetic field protects the planet from the effects of solar winds.
You will be surprised to know that the water present on earth's surface was initially trapped within the planet. Overtime this water was brought to the surface by the volcanic activities on the planet. The first life on earth was developed in the oceans through a process called abiogenesis or biopoiesis. This is actually a natural process which is responsible for the evolution of life from non living matter like simple organic compounds. Our Earth is tilted on its Axis by 23.4 degrees which is responsible for the seasonal changes on earth. Do you know that Earth's rotation is gradually slowing down. But don't worry, this is happening, at very slow rate of approximately 17 millseconds per hundred years. Slowing down of Earth's rotation speed will be responsible for the lengthening of our days. But at this rate it would take nearly 140 million years before the length of a day will have increased from 24 hours to 25 hours. The gravitational interaction between earth and the moon is responsible for Tides on the earth. It also stabilizes Earth's orientation on its axis and gradually slows down its rotation on its axis. Nearly 71% of Earth's surface is covered with water, mostly by oceans while the remaining 29% is land. It's surprising that over 99% of all species that ever lived on earth are extinct. Let me tell you that More than 7.6 billion humans live on Earth at present. Due to rotation the earth is flattened at the poles and bulging around the equator. The diameter of the earth at the equator is 43 kilometres larger than the pole to pole diameter. Now let's know some important statistical facts about earth The mass of earth is 5.97×10(24) kgs. The total surface Area of earth is 510072000 square kilometres and the Volume is 1.083×10(12) cubic kilometers. The earth is situated at a distance of 149.6 million kilometers from the Sun. If we talk about the size of Earth, its Diameter is 12742 kilometres. The orbital period of earth is 365. 256 days.
In this video you will learn many interesting facts about the beautiful planet Venus. Venus is the second planet from the sun. Venus is sometimes also known as the earth's sister planet, or twin planet of earth, as it is similar to earth in size and mass. You will be surprised to know that a day on Venus lasts longer than a year. It is so because, the Venus rotates on its axis so slow that its rotation period is longer than its Revolution period around the sun. Actually a year on Venus takes 225 Earth days but its rotation period on its axis is equal to 243 earth days, which is longest in the solar system. You will find it interesting that on Venus, sun rises in the west and sets in the East, which is just opposite to, what happens on the earth. The reason behind this is, Venus rotates in the opposite direction to the earth.
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Venus does not have any natural satellite. Venus is the only planet in our solar system that has been named after a female. Actually Venus is the name of roman goddess of beauty and love. The Planet Venus has been the symbol of beauty as it is the second brightest object in the sky after the moon, as seen from the Earth. Venus rotates in the opposite direction to most other planets. Venus is rotating in the opposite direction to the sun. This is Known as retrograde rotation. This rotation in opposite direction was caused due to a collision with an asteroid in the past. Venus is so bright that it can be seen during day time on a clear day. You will find it interesting that the atmospheric pressure on Venus is 92 times more than the earth's. It means that if you stand on its surface then you would feel pressure equivalent to that experienced deep beneath the sea on earth. If someone tries to walk on its surface he or she will be crushed to death. Because of this extremely high atmospheric pressure on Venus, any asteroid that tries to enter into its atmosphere, is crushed to pieces before hitting the surface. That is the Reason why, craters formed by asteroid impact are nearly absent on the planet.
Venus is the hottest planet in our solar system, its average surface temperature is 462 degrees centigrade. But now You may ask, why planet Venus is hottest not mercury, as mercury is the nearest Planet to the sun? Actually the reason behind very high temperature of Venus is its amplified greenhouse effect, 96.5% of the atmospheric gas of the Venus contains carbon dioxide, that traps The Heat and causes increased surface temperature, that makes it hotter than even Mercury. As we know that our planet Earth is tilted on its axis, which is responsible for seasonal variations on earth. But Venus is not tilted on its axis, so there is no seasonal variation. In 1961 Russia launched the first space probe to Venus, Venera 1, but it lost contact with base. But in 1962 mariner 2, a probe to Venus by USA was able to take measurements of the Venus planet. It is important to note here that Venera 3 by the Soviet Union was the first man made craft to land on Venus in 1966. The orbit of Venus planet is slightly elliptical. So it's distance From the Sun when it is closest to it, is 107M km and it's farthest distance is 108M km. Unlike Earth Venus has no flattening around the poles, it has a perfect spherical shape. The Diameter of Venus planet is 12092 km which is smaller than earth by 650 km. The mass of Venus is 81.5 percent of the mass of earth. The total mass of Venus is 4.86×10(24) kg. The surface gravity of the Venus planet is 8.87 m/s(2) which is 9.8 m/s(2) for earth. The escape velocity is 10.36 km per second. Escape Velocity is the velocity that is required to escape The gravitational pull of the planet. The highest mountain on the surface of Venus is known as Maxwell. It covers 540 miles in length with a maximum height of 7 miles. So these were some amazing facts about the beautiful planet Venus.
Here you will learn various amazing facts about Mercury planet that will blow your mind. Mercury is the smallest, fastest and closest planet to the sun. Because of its closeness to sun its surface temperature can reach up to 450 degrees Celsius during day time. As the mass of mercury is much smaller than the mass of earth, your weight on Mercury would be only 38% of your weight on Earth. You will be surprised to know that 1 year on mercury is only of 88 Earth days, as it takes 88 days to complete one revolution around the sun, but a day On the surface of Mercury is equivalent to 176 earth days, as it spins slower on its axis in comparison to earth. Mercury revolves around the sun at very high speed of 180,000 km/h. This makes Mercury the fastest planet in the Solar system.
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Let me tell you that mercury has almost no atmosphere. But why it is so? The reason behind this is, being small in size, its gravity is too weak to hold down a normal atmosphere. Because of the absence of atmosphere it is not capable of trapping heat from the Sun so the temperature of Mercury can fall to minus 170 degrees Celsius. In the entire solar system temperature swing of mercury is the highest. The temperature of Mercury can swing more than 600 degrees Celsius in a single day. As the Mercury Has no atmosphere, asteroids approaching the planet feel no air resistance and fall with great speeds on its surface. This is responsible for the formation of Big craters on the surface of mercury. In the year 1991 it was revealed by the radar observations that the south and the north poles of the planet may have ice, deep inside the craters. The Reason Behind this is, these Deep craters always remain in Shadow therefore are very cold.
One such Crater named as "Caloris basin" has been found on this planet. This crater is nearly 1550 km wide. It is So big, that it can accommodate the entire Texas state. It was created by an asteroid impact nearly 4 billion years ago. The asteroid Was around hundred km wide. Collision Of the asteroid with the Mercury surface generated immense amount of energy. This energy was equivalent to the energy generated by 1 trillion bombs of 1 megaton each. The planet Mercury was named after the roman God Mercury, the Messenger of the Gods. The diameter of mercury is 4879 km and its mass is only 5.5% of the mass of the earth. The size of mercury is only about one third the size of the earth. You should also know that the planet Mercury has no moons. Mariner 10 was the first spacecraft that visited Mercury. It Found that Mercury had its own magnetic field. Mercury is the second most densest planet in our solar system having metallic Core. The densest planet in our solar system is our own home planet earth. So this was all about the weird but amazing planet Mercury. I hope you enjoyed this informative video. In the next video I will tell you many unbelievable facts about the beautiful planet Venus. Go to HOME PAGE What is the Storage Capacity of Human Brain New Computer Chip Speed Up Scientific Discoveries by 1000 Times What is Mind Uploading (Brain Uploading or Mind Transfer) and when it will be a Reality How the Universe will End | Big Freeze, Big Rip, Big Crunch & Big Bounce Facts about Human Brain | Power of Human Brain and Brain Structure Time is an illusion | Past Present and Future Exist at the Same Time | Block Universe Life is Possible After Death According to Quantum Physics Unsolved and Unanswered Questions and Mysteries in Science and Physics
Our universe has been expanding since the beginning of time, almost 14 billion years ago following the big bang. But recent Hubble Space Telescope findings suggest that the universe is expanding much faster than previously thought. So, is the end of time nearer than expected? Actually Gravity is responsible for binding everything together in the universe. In a place having lots of matter, the attractive forces of gravity are much greater in comparison to the repulsive forces of dark energy. But in Mostly Matter free space, the repulsive forces because of the dark energy are more significant than the attractive forces of gravity. So because of this mysterious dark energy, the rate at which our universe is expanding has been increasing. The latest data obtained from the Hubble Space Telescope suggests that the expansion rate of the universe is 9% faster than expected. A team from SH0ES (supernovae, H0, for the equation of state)- at Johns Hopkins University has obtained this important data after performing some measurements. For this they analysed light from 70 stars in a nearby Galaxy known as the large Magellanic cloud. On the basis of their observations they calculated how fast these stars are moving away from us. A group of stars known as Cepheids was particularly analysed by the team. Cepheids brighten and dim at regular intervals.
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The team used a technique of measurement known as DASH. DASH is an acronym for Drift and Shift. With the help of this technique of measurement they could focus on more than one star at once. On contrary to this, images obtained from the Hubble Space Telescope are result of one star observed every 90 minutes. This makes the process more time consuming in comparison to the DASH technique. Scientists compared the results obtained from the standard Hubble measurements and the DASH measurement. After Comparison, some discrepancy was found in terms of, how bright the Cepheids actually were. Actually the brightness of a star depends on its closeness. Closer the star, more brighter it appears. On the basis of these results scientists concluded that our universe is expanding at a faster rate than expected, as the stars were slightly farther than they thought.
Adam Riess, Bloomberg professor of Physics and astronomy at the Johns Hopkins University, Nobel Laureate and the project's leader, said: "This is Not just two experiments disagreeing. "We are measuring something fundamentally different. One is a measurement of how fast the universe is expanding today, as we see it. “The other is a prediction based on the Physics of the early universe and on measurements of how fast it ought to be expanding. "If these values don't agree, there becomes a very strong likelihood that we are missing something in the cosmological model that connects the two eras." So does It mean that the end of the universe is nearer? The universe will continue to expand until matter and energy are evenly spread throughout. It will cause the temperature of the universe to cool down to absolute zero. Researchers think, when the repulsive forces of dark energy will overtake the attractive forces of the gravity, the rate of expansion of the universe will increase to very high level, untill it's pace reaches the speed of light. Although the universe is expanding at much faster rate and the end of the universe is nearer than previously thought but you need not to worry, as it would still take trillions of years to happen. So friends what do you think? What will be the Ultimate fate of our universe? Will eventually, the expansion rate of the universe, reach to the speed of light. How long will it take the universe to end? You can share your valuable ideas in the comment section of this video. Source and credits:
Scientists in the United States are building an equipment that will allow them to solve the mystery of parallel universe. This experiment is being conducted by the researchers from Oak Ridge National Laboratory in Eastern Tennessee. There is no doubt that this would be the biggest scientific discovery in the human history, if this experiment becomes successful. They have developed a portal like instrument that will help them Prove, that the parallel universe is a reality. With the help of this experiment scientists are hoping to access a mirror world. They call it the 'Mirrorverse'. In this mirror world, virtually everything is mirrored, right down to subatomic particles. Physicist Leah Broussard, is leading this experiment.
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They are building a 50 feet long tunnel to conduct the experiment. A beam of subatomic particles will be fired down this tunnel. The Beam will pass a powerful magnet and hit an impenetrable wall. A Neutron detector will be placed behind this impenetrable wall. If this experiment is successful, particles will transform into their mirror images, allowing them to pass right through the impenetrable wall. As the wall is impenetrable, particles should not be detected by the neutron detector on the other side of the wall. But If the the neutron detector finds traces of the particles, this could mean that the neutrons oscillated through the wall, in doing so, the neutrons entered a parallel universe to become mirror neutrons. Only the ones that can oscillate and then come back into our universe can be detected. If this experiment could prove the existence of parallel universe, it will change the laws of conventional science, as the parallel universe might follow completely different laws of Physics. So let's hope for the success of this groundbreaking experiment.
