How the Cosmos Began

 

The most popular theory of our universe's origin centers on a cosmic cataclysm unmatched in all of history the Big Bang Theory. This theory was born of the observation that other galaxies are moving away from our own at great speed, in all directions, as if they had all been propelled by an ancient explosive force. Before the big bang, scientists believe, the entire vastness of the observable universe, including all of its matter and radiation, was compressed into a hot, dense mass just a few millimeters across. This nearly incomprehensible state is theorized to have existed for just a fraction of the first second of time.

            Big bang proponents suggest that some 10 billion to 20 billion years ago, a massive blast allowed all the universe's known matter and energy even space and time themselves to spring from some ancient and unknown type of energy. The theory maintains that, the universe expanded with incomprehensible speed from its pebble-size origin to astronomical scope. Expansion has apparently continued, but much more slowly, over the ensuing billions of years.

            Scientists can't be sure exactly how the universe evolved after the big bang. Many believe that as time passed and matter cooled, more diverse kinds of atoms began to form, and they eventually condensed into the stars and galaxies of our present universe.

            The big bang theory leaves several major questions unanswered. One is the original cause of the big bang itself. Several answers have been proposed to address this fundamental question, but none has been proven and even adequately testing them has proven to be a formidable challenge.

8 Planets In Our Solar System

            Our Solar System is having 8 Planets namely: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Here are some information about our planets. 

MERCURY

Sun-scorched Mercury is only slightly larger than Earth’s Moon. Like the Moon, Mercury has very little atmosphere to stop impacts, and it is covered with craters. Mercury's day side is super-heated by the sun, but at night temperatures drop hundreds of degrees below freezing. Ice may even exist in craters. Mercury's egg-shaped orbit takes it around the sun every 88 days.

VENUS

          Venus is a dim world of intense heat and volcanic activity. Similar in structure and size to Earth, Venus' thick, toxic atmosphere traps heat in a runaway "greenhouse effect." The scorched world has temperatures hot enough to melt lead. Glimpses below the clouds reveal volcanoes and deformed mountains. Venus spins slowly in the opposite direction of most planets.

EARTH

           Earth is an ocean planet. Our home world's abundance of water and life makes it unique in our solar system. Other planets, plus a few moons, have ice, atmospheres, seasons and even weather, but only on Earth does the whole complicated mix come together in a way that encourages life and lots of it.

MARS

           Mars is a cold desert world. It is half the diameter of Earth and has the same amount of dry land. Like Earth, Mars has seasons, polar ice caps, volcanoes, canyons and weather, but its atmosphere is too thin for liquid water to exist for long on the surface. There are signs of ancient floods on Mars, but evidence for water now exists mainly in icy soil and thin clouds.

JUPITER

Jupiter, the most massive planet in our solar system with dozens of moons and an enormous magnetic field forms a kind of miniature solar system. Jupiter does resemble a star in composition, but it did not grow big enough to ignite. The planet's swirling cloud stripes are punctuated by massive storms such as the Great Red Spot, which has raged for hundreds of years.

SATURN

Adorned with thousands of beautiful ringlets, Saturn is unique among the planets. All four gas giant planets have rings made of chunks of ice and rock but none are as spectacular or as complicated as Saturn's. Like the other gas giants, Saturn is mostly a massive ball of hydrogen and helium.

URANUS

          Uranus is the only giant planet whose equator is nearly at right angles to its orbit. A collision with an Earth-sized object may explain Uranus' unique tilt. Nearly a twin in size to Neptune, Uranus has more methane in its mainly hydrogen and helium atmosphere than Jupiter or Saturn. Methane gives Uranus its blue tint.

NEPTUNE

           Dark, cold and whipped by supersonic winds, Neptune is the last of the hydrogen and helium gas giants in our solar system. More than 30 times as far from the sun as Earth, the planet takes almost 165 Earth years to orbit our sun. In 2011 Neptune completed its first orbit since its discovery in 1846.

Save Coral Reefs and Mangroves, Save Marine life

            Corals and mangroves are very much important in our ecosystem and to us, humans. It provides shelter to our marine life. The coral reefs maintain a balance of life with the mangrove and sea grass ecosystems near the coastal shores. Coral reefs support the food chain by being a food for tropical fish. This maintains the balance of the ecosystem. Coral reefs called as nature’s defense mechanism to prevent coastal soil erosion and flooding. It can lessen the disastrous hurricanes and tsunamis that sweep off life and property by the impact in coral reefs. Coral reefs are known to break the power of waves and reduce their intensity, thereby protecting coastal areas from destruction.

            Coral reefs also provide shelter, nutrition and habitat to almost a quarter of the world’s fish. The common income source for the fisherman in the coastal areas is heavily dependent on the coral reefs. That’s why coral reefs are very significant in our life.

            Just like coral reefs, mangroves stand a very important role in our ecosystem. It provides numerous goods and services both to the marine environment and people. Mangrove forests are home to a large variety of fish, crab, shrimp and mollusk species. These fisheries form an essential source of food for thousands of coastal communities around the world. It also serves as nurseries for many fish species, including coral reef fish. Mangrove wood is resistant to rot and insects making it extremely valuable. Many coastal and indigenous communities rely on this wood for construction material as well as for fuel. The dense root systems of mangrove forests trap sediments flowing down rivers and off the land. This help stabilizes the coastline and prevents erosion from waves and storms.
             It is very much important to take care of our marine life. In order to maintain its beauty, we must preserve and protect our coral reefs and mangroves for better and productive life in the future. 

Significance of Hydrosphere in our Life

        It is so easy sometimes to take our Hydrosphere for granted and we seldom take the time to really think about the role that this part of the planet plays in keeping us alive. Water is our armor in surviving the battle in life. Without water, we cant eat,drink,take a bath,wash our clothes and all the things we do which water is really needed. Water is very important in our daily lives.

        It is a human need. Human needs and uses water in many ways. It is obviously very important in our lives. We use it in cooking,washing our clothes,watering the plants & many more.

      
        We really also need it for drinking and some other purposes that the presence of water is really needed. Water can also be used to generate electricity through "Hydro Power Plants".

 
        Water also provides habitat. Hydrosphere provides an important place for animals to live. Examples are seas,oceans & rivers. These are the places were special kind animals & underwater creatures lives like fishes. The people who live nearby oceans have the opportunity to have a work like fisherman, they can catch fishes in the seas and sell it to the market to have some profit. Oceans,seas, & rivers have many benefits in humans life.
         Hydrosphere can also regulate climate. One of water's unique characteristics is its high specific heat. This means that water takes a long time to heat up and a long time to cool down. This is important in helping regulate temperatures on earth so that they stay within a range that is acceptable for life to exist.
         Imagine life without Hydrosphere or known as water? It is worthless & surely we will die. Water is powerful and precious. We should take good care for it is the reason why we are still in our planet earth today.

The Good and Bad Effects of Science and Technology

      Without Science there is no Technology. Without Technology, Science is worthless. This two are most likely husband and wife, they always stick together and can never be parted because they are united.
      With the help of Science and Technology our lives become more easier. many inventors invented high tech gadgets  and materials that can make our lives more comfortable. They invented this with good purpose but somehow it still have its advantages and  disadvantages.The Inventions and Innovations are very important to us, it is the main focus of our lives today "TECHNOLOGY", because we are now living in modern civilization, but this good inventions can also bring harmful effects to us.
For Example:

• Cellphones - We can use this through communicating by texting and calling our love ones, but the radiation of this gadget is harmful to our body and the addiction of using cellphone can also distract us especially students in our studies and obligations.

 
 

• Computers - It is one of the most popular gadget that ever invented and innovated in the world. We can communicate through chatting,using webcams and social networking sites. It is also one of the major producer of researches by just browsing the internet. And this gadget is very important in office works and also in students but it has harmful effects. Too much addiction and exposure to computers can lead damage to our eyes so, it is not really good for our health and we must not abuse our selves in using computers.

       Those are the advantages and disadvantages of Science and Technology. When this two combine we can surely invent good inventions and more innovations but we must remember that we have to limit our selves in using this high tech gadgets or materials to maintain a healthy social life.