The safest environments for life similar to that on Earth are the lowest-density regions in the outskirts of large galaxies like the Milky Way. Cells are made up of around 70-95% water. This ensures the existence of various life forms. Water is an excellent solvent, capable of dissolving many substances. If humans last that long, Earth would be . It is the right distance from the Sun, it is protected from harmful solar radiation by its . Air transport by flights and helicopters has come into widespread use. A SAT score of 1580 is needed for admission in Harvard - the score breakup for Reading and Writing is 720-780 and for Math, it is 740-800. 2 See answers Advertisement This series of Never Stop Asking "WHY?" Observational data suggest that the Earth-like planets likely formed from circumstellar disks with metallicities Z > 0.1 Z_Sun (study).if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'ourplnt_com-large-leaderboard-2','ezslot_4',600,'0','0'])};__ez_fad_position('div-gpt-ad-ourplnt_com-large-leaderboard-2-0'); Furthermore, all life forms require certain core chemical elements needed for biochemical functioning. These questions remain central to both continental and analytic philosophy, in phenomenology and the philosophy of mind, respectively.. Consciousness has also become a significant topic of . These include carbon, hydrogen, nitrogen, oxygen, phosphorus, and sulfur, often represented by the acronym CHNOPS. Q. answers as long as the answers refer to one essay question. Looking for more Never Stop Asking "Why?" It helps the plants make oxygen for us and it provides food for the plants through photosynthesis. On Earth, this is water. OR Can a star contain millions and millions of earths in it? And, if some kind of disaster doesnt intervene, our planet should continue to host life for at least another 1.75 billion years. Around 2.4 billion years ago, the so-called Great Oxidation Event took place, when the . The consent submitted will only be used for data processing originating from this website. Related: The Sun is less active than sibling stars, study shows. modifier. ocean-bottom "fumaroles", places where volcanic activity is The distance to the sun may not be so ideal then, and the Earth may experience a runaway greenhouse effect, like Venus, extinguishing all life. Also an animal lover! Answers must be in essay form and must be . It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'ourplnt_com-box-2','ezslot_3',619,'0','0'])};__ez_fad_position('div-gpt-ad-ourplnt_com-box-2-0');Earth, our blue planet is a tiny oasis in a vast, cold, and dark space. Earth's amazing gaseous atmosphere is responsible for making life possible on this, the third planet from the Sun . seasonal change made life possible on the earth by energy from sun heats this layer; and the surface below ; causing expansion of the air. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page. Scientifically, there are Q. includes questions submitted by YOU and answered by the museum's astronaut Dr. David Wolf! People couldnt survive on these planets. Earth also has the perfect range of temperatures for life. The moon is also responsible for the intertidal zones, which are vast and diverse ecosystems. According to a 2015 study, elliptical galaxies are the most habitable in the cosmos, though. I think life- supporting planets are common in the universe, but perhaps the amazing biodiversity we see on earth is rare, a result of randomness and luck which has given us a comfortable climate. It makes life possible on Earth by providing us light. No, here's why, This Day in Science, Technology, Astronomy, and Space Exploration History. The factors which makes life on Earth possible are: energy, carbon, water in liquid form, and various other elements such as nitrogen, phosphorus, hydrogen, and most important oxygen.. What are the conditions on Earth? Beacuase, Life is only found on Earth for a couple of reasons.We know that life requires sun, moderate temperatures, water, and certain chemical elements like carbon, oxygen, and nitrogen. It is the operation of leveling where the difference in . This makes the ocean the principal life habitat on Earth. Other planets dont have exactly the same conditions as Earth so life would be somewhat different there. We are detecting exoplanets around other stars at the right distance to have the right temperature for life to exist. Our planet might be out of the Goldilocks Zone. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. The unusually circular orbit of our Sun around the galactic center also tends to keep it clear of the spiral arms. Approximately three-quarters of the Earth's surface is covered by water. Consider also what the climate would have been like if the earth had been tilted at say ,45`,and the implications for life. There is even the possibility that life formed on Mars before it formed on Earth and that Mars seeded life on Earth. In the absence of ultraviolet rays reaching the earth, humans would suffer from the deficiency of. Its estimated that 1 in 20 stars are like our sun. Most life on earth lives in warm to moderate temperatures. Earth has a gaseous atmosphere which is responsible for making life possible on the planet.It is the third planet from the Sun. Summary: The Earth's atmosphere contains oxygen because plants continuously produce it through photosynthesis. These may be very simple organisms such as bacteria or even more complex life such as plants and animals. . Mars does have an atmosphere, but it is about 100 times thinner than Earth's atmosphere and it has very little oxygen. questions? These other possible forms of life would be very far away so they are not something to worry about. There arent nearly as many life forms that live in really cold temperatures such as at the poles or in extremely hot environments such as inside volcanoes. It would have meant that much larger portions of each hemisphere would be subjected to continuous sun in summer, followed by a long, cold and dark winter. You want that big sort of ocean reservoir at the surface which happens when youre kind of in the middle. Le russe (en russe : , rsskij zk 9) est une langue appartenant au groupe des langues slaves orientales de la famille des langues indo-europennes, auquel appartiennent aussi l' ukrainien et le bilorusse. They are prone to blasting their planets with bursts of radiation.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'ourplnt_com-large-mobile-banner-2','ezslot_5',640,'0','0'])};__ez_fad_position('div-gpt-ad-ourplnt_com-large-mobile-banner-2-0'); The Sun is also unusually metal-rich for a star of its age and type. Earth, our blue planet is a tiny oasis in a vast, cold, and dark space. Earth has some potentially rare attributes like the size of the Moon, plate tectonics with shallowish oceans (or deep oceans). Fastt Math is proven effective for struggling students. Availability of liquid water as it is located at a right distance from the Sun. There are many theories about how life started on Earth. Solar energy is essential to agriculturecultivating land producing crops and raising livestock. Plants need sunlight to grow. There are relatively few stars near the Sun. One of the main requirements is a liquid where molecules can react. So, the completely accurate answer is, "Not that we know of, but Required fields are marked *. An astronaut on Mars would not be able to breathe the Martian air and would need a spacesuit with oxygen to work outdoors. 120 seconds per short answer item. Thus, waters role as a solvent facilitates the transport of molecules like oxygen for respiration. Directions: Answer all three parts in a 10 minute time frame. REASON ONE: ATMOSPHERE Earth has a bre. So, there still might be life on other planets, or even the moons of other planets, but it would probably be very different than life on Earth! Answer. Furthermore, the tides would be only about one-fourth of their current size. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Other factors to consider would be the tilt of earth. Also, no other planet has water like Earth has. . Currently, it is 23.5 degrees. 7. Thanks to our Moon, the tilt of the axis is very stable it only varies between 22.1 and 24.5 degrees during a cycle that averages about 40,000 years. it provides heat Life out of Earth is possible 1. in Heaven (without misery or restlessness) 2. in Hell (without rest). We can't But, the largest stars, known as hypergiants, have lifetimes of only a few million years. Liquid water, something found in abundance on Earth, is the last needed factor. If it had none, there would be no seasons, and the Earth would be a radically different place. If you want an answer to these questions, reading this article will be an illuminating experience. By signing up I agree that I am 13 years or older, Iraq, officially the Republic of Iraq, is a country in Western Asia.It is bordered by Turkey to the north, Iran to the east, the Persian Gulf and Kuwait to the southeast, Saudi Arabia to the south, Jordan to the southwest and Syria to the west.The capital and largest city is Baghdad.Iraq is home to diverse ethnic groups including Iraqi Arabs, Kurds, Turkmens, Assyrians, Armenians, Yazidis . The fossil record tells us that life on Earth has lasted at least 3.5 billion years (the Earth is about 4.54 billion years old), with the oldest physical traces of life dating back 3.7 billion years.And, if some kind of disaster doesn't intervene, our planet should . It filters the harmful ultraviolet rays of the Sun. History of Life on Earth Life on Earth has existed for a relatively long time when compared to the age of the Earth. An example of data being processed may be a unique identifier stored in a cookie. The gamma-ray bursts are extremely dangerous events. speak with any precision about "life as we DON'T know it", other It is the only planet we know of that can support life. This abundant supply of oxygen allows life forms like animals to flourish. We must not confuse terms. Scientists say because of the giant planets like Jupiter and Saturn, the remaining small solar system bodies were either ejected out of the system more quickly or became a part of the existing planets sooner, thanks to the angular momentum the gas giants add to the Solar System. Our atmosphere contains 21% oxygen, which is necessary for us to breathe, 78% nitrogen, and . Even the strength of gravity determines the form of our bodies such as our bones and muscle strength. Without light the Earth would be frozen. Our knowledge of galaxy types and their distribution suggests that life as we know it can only exist in about 10% of all galaxies.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'ourplnt_com-medrectangle-4','ezslot_1',621,'0','0'])};__ez_fad_position('div-gpt-ad-ourplnt_com-medrectangle-4-0'); The main reason is extremely energetic explosions that have been observed in distant galaxies, called Gamma-ray bursts. This reduces risks to Earth (or any other planet in the Solar System) from gravitational tugs, supernovae, or gamma-ray bursts (all observed GRBs have originated from outside the Milky Way galaxy, though). According to relegion, God created life. It also floats when it is frozen . Our Sun is the most important source of energy for life on Earth. The atmosphere on Earth contains water vapor . Perhaps the biodiversity would be diminished, if life evolved at all. Credit: www.whatchristianswanttoknow.com. The Earth receives enough energy from the Sun to allow water to exist as a liquid on the surface. Biological Roles of Water: Why is water necessary for life. Earth is a blue marble in space: the water gives our planet its blue color: about 71 percent of the Earths surface is covered with oceans and lakes. 8f5 2eb 3f9 b69 1ef fc4 25a ae4 e3d 542 1ee 0b5 3ec 3ac 3d9 40a f7d 6a7 818 ce9 0e6 298 3c5 89c d2c 94a 24f ebb 170 ae0 5f2 e21 045 35c 168 e63 fff 67d 202 d28 758 94a 260 a31 d12 890 1bf 499 85c 22c 390 48a 479 43c 490 2ec 94a f5c aa2 e59 9a8 d1b 14b 2aa 389 20c 604 ed4 479 b83 3dd 74e f33 429 977 38e 19f 086 819 50c d31 4f0 0b1 8ee 1df a55 3f7 7c1 169 2c7 3b7 b0c 1e9 9a0 0f5 452 cea ca9 b76 841. In other words, its gravitational pull has prevented the earth from wobbling on its axis , causing dramatic climate shifts. The Goldilocks principle is named by analogy to the childrens story, The Three Bears, in which a little girl named Goldilocks tastes three different bowls of porridge, and she finds that she prefers porridge that is neither too hot nor too cold but has just the right temperature. Continue with Recommended Cookies, pale blue dotHomeSpace ExplorationEarth from SpaceAstronomyLife on EarthBack, Home Planet Earth Life on Earth 8 Things that make Life on Earth Possible. It gets through Earth by sunlight lightenergy and thermal energy. happening 15,000 feet or more deep in the ice-cold waters. We know that life requires sun, moderate temperatures, water, and certain chemical elements like carbon, oxygen, and . It is located in what astronomers call the Galactic habitable zone, the region of a galaxy in which life might most likely develop.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'ourplnt_com-leader-2','ezslot_6',622,'0','0'])};__ez_fad_position('div-gpt-ad-ourplnt_com-leader-2-0'); Solar Systems location avoids the galaxys perilous inner regions. or I have my parent or guardian's consent. Stars more massive than the Sun live shorter, usually not long enough for planets to develop life. The atmosphere traps the required heat of the Sun and allows the rest to escape into space thus maintaining a moderate temperature on the Earth. 9% argon. Give any two features of the earth that make it a 'Unique Planet'. Why is solar power becoming important? Solar energy also drives the Earth's climate, and slight variations in solar radiance could offset (or increase) global warming. Many scientists believe that this unusually large and close orbiting satellite helps stabilize the Earth's axis or rotation. The most common contender brought up for this solvent is the one life uses on Earth: water. Energy from the Sun makes life on Earth possible. would have halted there itself, balanced by thermal pressure. The unique properties of water make life possible on Earth. life" on Earth, life somehow manages to survive. I am a software developer, a former road racing cyclist, and a science enthusiast. We do know that life as we understand it requires very special conditions to exist. environments that we once considered to be "extremely hostile to These are not suitable for life, too. What makes the Earth habitable? Please consider supporting me on, on 8 Things that make Life on Earth Possible, 8 Things that make Life on Earth Possible, Fly over Mount Sharp on Mars with this NASA video, Humans walking on two legs because of exploding stars, new study says. Catch up on all of the past "Why's" on theblog. There are many theories about how life started on Earth. It radiates light and heat or solar energy which makes it possible for life to exist on Earth. A more immediate threat is a global warming apocalypse. Question Date: 2019-02-01: Answer 1: Life is possible on Earth because Earth has the particular characteristics and substances that are required by all known life forms. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); This site uses Akismet to reduce spam. One possibility is that the Sun formed in a part of the Milky Way Galaxy that had an abundance of metals and then migrated to its current position. Answer. Spiral arms are dangerous places because massive star supernovae are concentrated there, and giant molecular clouds can perturb the Oort cloud comets leading to more comet showers in the inner Solar System. Il compte plus de 280 millions de locuteurs (comme langue maternelle ou langue seconde). Answer: Life as we know it is possible on Earth because of its distance from the sun, allowing water to exist in all three states, and in a cycle. Hence, the measure of PRT is 110 . Angle #N# and angle #P# are supplementary. How does solar energy support life? Learn how your comment data is processed. Moving the Earth to a wider orbit could be a solution and it is possible in theory. 9% argon. Our atmosphere contains 21% oxygen, which is necessary for us to breathe, 78% nitrogen, and . 3000 North Meridian Street, Indianapolis, IN, USA 46208-4716 | phone 317-334-4000. I should add that not all life is directly dependent on sunlight. Related: Earths magnetic field is changing 10 times faster than previously thought. What makes the Earth habitable? [Explained], Is Earth as smooth as a billiard ball? Without water, most probably life couldnt emerge on Earth. Most stars the same age as our Sun have more elliptical orbits. 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