For the first topic there's some informations and it's a bit easy
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But for the second topic i searched for some
اقتباس:
Space exploration is a term which describes searching outer space. There are many reasons for space exploration. The most important reasons are scientific research and the interest of humans to learn more about outer space. For centuries, humans had dreamt of reaching outer space. Better rockets made it possible in the 20th century. On October 4, 1957, the former Soviet Union launched the Sputnik I, which was the first artificial satellite. This started the Space Race and people later went into orbit and Americans visited the Moon in Project Apollo. Many space probes have gone to the various planets and other places in the solar system to send back information about them.
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اقتباس:
Space exploration is the ongoing discovery and exploration of celestial structures in outer space by means of continuously evolving and growing space technology. While the study of space is carried out mainly by astronomers with telescopes, the physical exploration of space is conducted both by unmanned robotic probes and human spaceflight.
While the observation of objects in space, known as astronomy, predates reliable recorded history, it was the development of large and relatively efficient rockets during the early 20th century that allowed physical space exploration to become a reality. Common rationales for exploring space include advancing scientific research, uniting different nations, ensuring the future survival of humanity and developing military and strategic advantages against other countries.
Space exploration has often been used as a proxy competition for geopolitical rivalries such as the Cold War. The early era of space exploration was driven by a "Space Race" between the Soviet Union and the United States. The launch of the first man-made object to orbit the Earth, the USSR's Sputnik 1, on 4 October 1957, and the first Moon landing by the American Apollo 11 craft on 20 July 1969 are often taken as landmarks for this initial period. The Soviet space program achieved many of the first milestones, including the first living being in orbit in 1957, the first human spaceflight (Yuri Gagarin aboard Vostok 1) in 1961, the first spacewalk (by Aleksei Leonov) on 18 March 1965, the first automatic landing on another celestial body in 1966, and the launch of the first space station (Salyut 1) in 1971.
After the first 20 years of exploration, focus shifted from one-off flights to renewable hardware, such as the Space Shuttle program, and from competition to cooperation as with the International Space Station (ISS).
With the substantial completion of the ISS[1] following STS-133 in March 2011, plans for space exploration by the USA remain in flux. Constellation, a Bush Administration program for a return to the Moon by 2020[2] was judged inadequately funded and unrealistic by an expert review panel reporting in 2009.[3] The Obama Administration proposed a revision of Constellation in 2010 to focus on the development of the capability for crewed missions beyond low Earth orbit (LEO), envisioning extending the operation of the ISS beyond 2020, transferring the development of launch vehicles for human crews from NASA to the private sector, and developing technology to enable missions to beyond LEO, such as Earth/Moon L1, the Moon, Earth/Sun L2, near-earth asteroids, and Phobos or Mars orbit.[4]
In the 2000s, the People's Republic of China initiated a successful manned spaceflight program, while the European Union, Japan, and India have also planned future manned space missions. China, Russia, Japan, and India have advocated manned missions to the Moon during the 21st century, while the European Union has advocated manned missions to both the Moon and Mars during the 20 /21st century.
From the 1990s onwards, private interests began promoting space tourism and then private space exploration of the Moon (see Google Lunar X Prize).
اقتباس:
Is space exploration worth the money?
اقتباس:
All of the "NO" arguments come from people who seem to know nothing about space. First off: The most widely used argument that DOES NOT support space exploration is: "We have too many problems on Earth, so why go into space?". This statement makes me cringe. While there are many problems on Earth, a lot of them can be solved using the technologies that we develop for space exploration. An example of this is NASA's help on research into cancer and preventing, treating, and even curing it. According to NASA's website (https://www.Nasa.Gov/pdf/268137main_A..._FACTSHEET.Pdf), they have done several things to contribute into cancer research such as develop technology that helps detect cancer in breast tissues.
The second biggest argument is "It is too expensive. We should be spending space program money helping the needy." While it is true that the poor need help, over ten times more of the US's National Budget for 2014 has gone into welfare than into space exploration. So why isn't welfare too expensive? We seem to be spending a lot more on it than space exploration as it is.
Space Exploration also gives the opportunity to one day, save mankind, and also benefit it greatly.
Take one of Saturn's moons, Titan. It has enough lakes and oceans of natural on it to allow humanity to function for thousands of years with new technology. Plus, space exploration also creates lots of green technology, so that we may never need to use the resources on the moon. How would we get to Titan? Funding space exploration. How would we develop these green technologies? Funding space exploration.
Back to saving mankind:
There are thousands of near-earth asteroids that could one day pose a threat to human civilization. Back in 2013, the Chelyabinsk meteor struck Russia, killing many people and causing millions or even billions of dollars of damage.
This was a 20 meter diameter meteor.
Events like this, could, in the future be prevented by funding space programs and having them have more of a budget that is able to be used developing technology to prevent meteor strikes by changing the orbit paths of the asteroids so that they do not strike Earth.
Nine Good Reasons for Space Exploration
Advocates of space exploration often get asked the question: “Why should we spend money on NASA where there are so many problems here on Earth?” Universe Today has been compiling a list of responses to this question by space-bloggers from across the web. Check it out, there are some great answers.
In response to Universe Today’s call for answers, we decided to compile a list of our top reasons that space exploration is a worthwhile endeavor. I also encourage everyone to read The Case for Space Exploration, a collection of essays and articles put together by the Space Foundation.
Now, without further ado, our list:
1. Perspective – As our telescopes probe the depths of space and time and our spacecraft missions reveal the scale and diversity of worlds even within our own solar system, we are provided with a humbling sense of our place in the universe. Carl Sagan expressed the significance of this perspective in a beautiful passage in his book Pale Blue Dot. You can also listen to Sagan himself read the passage in this video clip. The world would be a better place if everyone watched that video.
2. Protecting and Understanding our World –
NASA’s Earth Science division helps us understand the fantastically complex world that we live on.
Studying other worlds like Venus and Mars teaches us how special our planet is, and provides sobering examples of how the climates of planets can change.
NASA-funded research scans the skies for dangerous asteroids, and missions to asteroids teach us how we might be able to divert them from a collision course, should the need arise.
3. Inspiration – The Apollo missions inspired an entire generation of students to pursue math and science careers. As our society becomes more technology-dependent, the populace needs to become scientifically literate to keep up. Telling students that “You could be the first astronaut on Mars!” or “You could be the one driving the next Mars rovers!” is a pretty effective way of inspiring them to study science and math.
4. The Economy – NASA does not launch buckets of cash into space. The majority of the money spent on space exploration goes toward the salaries of thousands of skilled American workers who make NASA’s missions so successful. For more on this, and its connection to the recent Mars rover budget scare, check this post.
5. Exploration – To be human is to be an explorer. It is part of who we are: since the first tribes left the African savanna and spread into Europe and Asia, we have had the need to explore the unknown. Now humans have visited or settled every corner of the globe. The instinct to explore is still active, but there are very few outlets. Some people seek out extreme or exotic places to satisfy this need, risking their lives to do so. Others look to the skies. It may be an old cliche, but Star Trek had it right: Space is the final frontier, and it calls to the explorer in all of us.
6. New Technology – Space exploration brings together a lot of smart people from many different fields and puts them to work on some very difficult problems. The result is not only fantastic scientific discoveries, but also many useful inventions. From healthier baby food to technology to better diagnose breast cancer, to farther flying golf balls, NASA technology is all around you. Check here for an extensive list.
7. Answering The Big Questions – How did life begin? How did the universe begin? How was our world created? Are we alone? These questions and others have been asked by every generation since the dawn of time. That we can even ask them is a testament to the power of the human brain. Now, because we are smart enough and bold enough to explore the universe, we are finding the answers. In the words of Carl Sagan, “We are starstuff contemplating the stars.”
8. International Collaboration – Large space exploration projects are almost always the result of international cooperation. The International Space Station is the most obvious example, but the space shuttle regularly has astronauts from other nations, and many robotic missions include instruments built by teams in other countries. As NASA gears up to return to the moon, precursor missions from Japan, India, China and Russia are already in orbit, are planned, or are under construction. Future human Mars missions will almost certainly involve multiple space agencies to spread the cost among several nations.
9. Long-term Survival – As it stands, all of humanity’s eggs are in one small basket called “Earth”. It is only a matter of time before something happens to our planet that is so devastating that it changes the course of life as we know it. Whether the disaster is natural, like a rogue comet, or self-inflicted, like nuclear war, it is possible that our home will no longer be habitable. What happens, then, to all of the accomplishments of the last thousand generations of humans? All of our art, our music, our literature, our science, even our very genes could be wiped out. Unless, of course, there are a few humans living elsewhere in the solar system. Space exploration and colonization of the Moon and Mars are an insurance policy for humanity and all of our achievements.
What I want to say is that I noticed a mess in this thread for that purpose I advise you to organise your work so as the others can understand
Also,you can forget about the other pages,trials and start again
In brief,you can tell me about your ideas,what are the difficulties you face? And how can we revise english in order to take the exam with distinction nchallah
what i want to say is that i noticed a mess in this thread for that purpose i advise you to organise your work so as the others can understand
also,you can forget about the other pages,trials and start again
in brief,you can tell me about your ideas,what are the difficulties you face? And how can we revise english in order to take the exam with distinction nchallah
pslease try to be serious and punctual
best of luck
سلام مرحبا بك استاذة معنا و شكرا جزيلا على إضافتك الرائعة
أرجو منكي أن توضحي لنا ما يجب علينا فعله الأن بالظبط للإستفادة ٱكثر
بارك الله فيكي و شكرا
What I want to say is that I noticed a mess in this thread for that purpose I advise you to organise your work so as the others can understand
Also,you can forget about the other pages,trials and start again
In brief,you can tell me about your ideas,what are the difficulties you face? And how can we revise english in order to take the exam with distinction nchallah
المشاركات المنشورة تعبر عن وجهة نظر صاحبها فقط، ولا تُعبّر بأي شكل من الأشكال عن وجهة نظر إدارة المنتدى
المنتدى غير مسؤول عن أي إتفاق تجاري بين الأعضاء... فعلى الجميع تحمّل المسؤولية
( تقرير عن مشاركة سيئة )، و الموجودة أسفل كل مشاركة .
2015-08-22, 21:46
العرض العادي
