NASA’s just lately retired Spitzer Space Telescope has given us the most recent take a look at the nebula and what it seems like.
The most massive stars in the universe are born inside cosmic clouds of gas and dust, where they leave behind clues about their lives for astronomers to decode.
Ever since we began studying concerning the universe and the interstellar house, we now have heard about stars. But there have been questions on how these stars are born and the way their native place seems like. Well, it was first found in 1958 by radio telescopes that’s a nebula often known as W51 is among the most energetic star-making areas in our Milky Way galaxy it makes a rich cosmic tapestry in this image from NASA’s recently retired Spitzer Space Telescope.
Located about 17,000 light-years from Earth, in the direction of the constellation Aquila in the night sky, W51 is about 350 light-years – or about 2 quadrillion miles – across. It is almost invisible to telescopes that collect visible light (the kind human eyes detect), because that light is blocked by interstellar dust clouds that lie between W51 and Earth. But longer wavelengths of light, including radio and infrared, can pass unencumbered through the dust. When viewed in infrared by Spitzer, W51 is a spectacular sight: Its total infrared emission is the equivalent of 20 million Suns. However, it isn’t straightforward to identify the nebula in the evening sky with telescopes that accumulate seen gentle. This is as a result of the sunshine between W51 and Earth will get blocked because of the presence of mud clouds fashioned in the galaxy. Using radio, infrared or longer wavelengths of sunshine can assist us discover the nebula. This is how the infrared wavelength of NASA’s Spitzer telescope helped in capturing the sight of W51.
If you could see it with your naked eye, this dense cloud of gas and dust would appear about as large as the full Moon. The Orion Nebula – another well-known star-forming region and a favourite observing target for amateur astronomers – occupies about the same size area in the sky. But W51 is actually much farther from Earth than Orion and thus much larger, and it’s about 75 times more luminous. While Orion contains four known O-type stars – the most massive stars in the universe – W51 contains over 30.
“Star factories” like this one can operate for millions of years. The cavernous red region on the right side of W51 is older, evident in the way it has already been carved out by winds from generations of massive stars (those at least 10 times the mass of our Sun). The dust and gas in the region are swept around even more when those stars die and explode as supernovas. On the nebula’s younger left side, many stars are just beginning to clear away the gas and dust in the same way the stars in the older region have done. It’s apparent that many of these young stars are in the process of forming bubbles of empty space around themselves.
This image was taken as part of a major observation campaign by Spitzer in 2004 to map the large-scale structure of the Milky Way galaxy – a considerable challenge because Earth lies inside it. Called the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE), the survey also turned up valuable data on many wonders within the Milky Way, including images of multiple stellar factories like W51 that were hidden by dust from visible-light observatories.
“The really spectacular images provided by Spitzer via the GLIMPSE survey ¬– in concert with data from many other, complementary telescopes – give us insight into how massive stars form in our Milky Way, and then how their powerful winds and radiation interact with the remaining ambient material,” said Breanna Binder, an assistant professor of physics and astronomy at California State Polytechnic University, Pomona, who studies the life cycles of massive stars. “We can’t observe star-forming regions in other galaxies in anywhere near the level of detail that we can in our own galaxy. So regions like W51 are really important for advancing our understanding of star formation in the Milky Way, which we can then extrapolate to how star formation proceeds in other, nearby galaxies.”
NASA’s Spitzer Space Telescope launched 17 years ago this week, on Aug. 25, 2003. The spacecraft was retired on Jan. 30, 2020. Though the mission has concluded, the entire body of scientific data collected by Spitzer during its lifetime is available to the public via the Spitzer data archive, housed at the Infrared Science Archive at IPAC in Pasadena, California.
NASA’s Jet Propulsion Laboratory, a division of Caltech, managed Spitzer mission operations for NASA’s Science Mission Directorate in Washington. Science operations were conducted at the Spitzer Science Center at IPAC at Caltech. Spacecraft operations were based at Lockheed Martin Space in Littleton, Colorado.
By ANUSHKA SHARAD
Our Social Dilemma
When I ask a question to people about why they use social media? The common answer people give is that they have access to interact with their friends and other people. Technology bought remarkable changes in human life, they increased communication between people, they found organ donors, and they spread news faster and many more. This technology bought meaningful and positive changes to human life. Nevertheless, we are unaware of the flip side of the coin.
Many people think that Facebook is just a place to see their friend or YouTube is just a source to see videos around the world. What we don’t realise is they are competing for our attention. How it is possible? Let us dig down deeper into it.
Large tech companies like Facebook, Google, Tiktok, Instagram, Pinterest have a business model to engage people onto their screens, to get people’s attention as much as possible and making money simultaneously within that span of time. All that we think is free on the internet is not in reality, they are paid by advertisers. The advertisers pay these companies in exchange to show their advertisement.
If internet wasn’t a free source, the engagement rate towards it would drop down drastically. As we, don’t pay for the product we have become the product. Where the tech companies are the sellers, advertisers are the customers and the product being sold is our attention.
Every business thinks that if they place an advertisement they will reach their goal of success early. In order to reach the success in that particular business they need to have great prediction and lot of data.
The tech companies whose business model is to make sure the advertisers are successful in that business track your data, all the clicks you have made, all the likes, screen time, almost everything is tracked and monitored. They know everything thing about us whether we are lonely or happy. They even know our personality type.
There are lot of techies in Silicon Valley learnt to use all the knowledge about human psychology that persuades people and build that into technology. This is persuasive technology, A design technique that can modify someone’s behaviour. Instagram has infinite scrolling feature that persuades people to keep on scrolling until they find something interesting.
Another feature very commonly used is refreshing. You pull your screen down and there will new feed on the top. So the infinite scrolling and refresh feature gives you a reward at a regular basis, when you scroll down there is something new on the screen that looks interesting for you which release dopamine into your body, to get back the dopamine hit you have to keep on scrolling. Now this action of pulling down the screen and scrolling becomes an unconscious habit. This in psychology is positive intermittent reinforcement.
We have surrounded our lives with perceived sense of perfection, we get short-term rewards of dopamine hit through likes, thumbs up, comment etc,. We get a fake popularity that we consider as real. These short-term rewards force us to fall into the loop to do something new to get that reward again. Technology is not only controlling our attention but technologies like social media have changed psychology of kid’s as well as teenagers; they have lost their self-worth through this fake reality. Today’s young generation is more anxious and more depressed.
Processing power has advanced quadrillion times since 1960s but our human brain has not evolved and fundamentally, it would never change. We all think the same that Artificial intelligence will be the destructor of humans in far future, what we need to understand is Artificial intelligence is running our world right now.
The big tech companies have tons and tons of computers stored in a massive room that runs all algorithms from simple task to complex task. However, Artificial intelligence isn’t the problem, it is just like a machine with a define task to do and it learns by performing different experiments to reach the task and gets slightly better every single day.
Famous basketball player Kyrie Irving believed that earth is flat, later when he apologized he blamed to YouTube’s rabbit hole. Basically Kyrie Irving fell into the trap of YouTube recommendation, YouTube’s A.I used recommendation feature to engage Kyrie onto his screen by displaying all the videos that were promoting the flat-earth conspiracy theory, its like the YouTube finds the nearest rabbit hole to dig down deeper and deeper.
Finally, Kyrie was convinced that the earth is flat because all the videos he was watching sound true to him. When he apologized for believing that earth is flat, few student were interviewed saying “the round-earth people got Kyrie”. The algorithm is getting smarter exponentially today people are convinced by the flat earth theory tomorrow there would be new conspiracy theory that people will believe into.
There is lot of fake news spreading faster than real news; It has increased polarization among people, nations are dividing themselves. Internet has become as market place, a market place where human futures are being sold, a market place where you are just a zombie who look at the screen for a long time. This is undermining democracy, if this goes on for years we won’t survive.
People often say that technology has ruined the world but this isn’t true. It is simultaneous utopia and dystopia, you can call anyone from any corner of the world, and on the flipside, your calls could be tracked to use it against you.
Social media was built to spread love amongst people but the business model of different business and their financial incentives have ruin the fabric of healthy society, and there is no financial reason for the tech companies to change their services. There is no law on the tech companies to regulate data and to use is ethically
We need to admit these bad outcomes of technology are because of our work. We can demand the tech companies to built this humanely and not like an attention extraction source. The very fabric of healthy society depends on getting off the corrosive business model.
if we have built something we have a moral responsibility to change it and make it ethically possible.
Humans and Climate Change: Our Energy Produce
A general definition of energy is Capacity to do work. About 99% of human history , man used muscle energy either humans or animals to do work. Using muscle energy wasn’t an efficient way for us to perform tasks as it consumed large energy. To match our needs and to increase efficiency we started making and developing tools. The first energy development happened when humans learnt to use the force of nature. Wind mills and water power increased the food production and irrigation in farms respectively. As technology advanced Coal became the dominant commodity to generate energy. In 1698, an English engineer named Thomas Savery invented steam engine. It was the first machine that provided significantly large amount of power not derived from muscle, water or wind. Coal powered industrialisation gave a boost to scale the production of goods. It was the industrial revolution where we discovered a clean and efficient form of energy called electricity. Electricity allowed people to work in dark and power heavy machinery. Coal that was used to generate energy was then used as a raw material to generate electricity. Soon after we discovered Oil and gas which were relatively efficient and clean source of energy than Coal. Oil was revolutionary because it could power not only ships, electricity and trains but also internal combustion engines which made cars and aeroplanes possible.
From an energy use perspective the world since 1900 is a new era in human history, electricity and oil has become the core of our energy use. We use electricity for everything from lighting bulbs to powering our gadgets and oil for transportation. Scientists estimate that if we continue our current energy usage, we will run out of oil and gas in next 50 years and Coal in next 100 years. Since 1900 our energy demands have increased exponentially and the usage is abrupt. Energy is cheap yet its most important factor that needs attention. We are not really concerned about our energy usage. So will renewable energy be our way to go ? Before answering this question let us know all about renewable energy.
Renewable energy is energy that is collected from renewable resources like sun, wind and various others. It is the cleanest energy and doesn’t emit carbon dioxide in the air. Solar panels and wind turbines are the best example of technology to harness renewable energy. Renewable energy is the only category of energy that grew globally at double digits over the past decade. For perspective, in 2009 the world consumed 8.2 exajoules of renewable energy. In 2019, that had nearly quadrupled to 29.0 exajoules. At some point renewable seems a fascinating alternative that could also create new jobs. But the truth is it is not our way to go and why ? let us understand.
The electricity from solar rooftops end up costing twice as electricity from solar farms. Both solar and wind farms acquire significant areas of land with solar panels and wind turbines and it requires large transmission lines to bring the electricity from the country’s side into the city in which about 7-8 % of electricity is drained. Many big bird species that are endangered like kites, eagles and condors die due to wind turbines, in fact the most significant threat to these birds are wind turbines. In terms of solar farms, we need to clear the land and the wildlife to install the solar panels that threaten the species living there. To give an example, to build Ivanpah solar farm in California people clear all the desert tortoise, literally pulling and filling into the truck to shift them to other places. Many of these tortoises died while loading in trucks. At current estimates over 6000 birds die every year by catching on fire above the solar farm. Now using the cleaner energy and dealing with the environmental impact comes at a high cost. The electricity from the solar and wind farm can cost significantly high. We might think that it’s ok to pay high to receive clean energy.
Germany, the leader of solar, wind and renewable energy generates 48% of its electricity from clean sources. But at the same time the cost of electricity increased by 50% since the revolution. On the other hand, France produces about 75% of its electricity from clean zero-emission sources and pays almost half as much as Germany pays for their electricity. France produces its electricity from nuclear energy, about 75% of France is powered by nuclear energy.
Nuclear energy turns out to be more reliable, It can generate electricity for 90% of the year. A 40 year study by the Environmental Progress shows that it costs less to produce electricity from nuclear power plants than solar, wind and other renewable sources. After understanding all these positives about nuclear power, a general question arises in each mind, is nuclear power safe ? Another 40 year study by British medical journal lancet finds nuclear power to be the safest. A climate scientist named James Hansen found out that nuclear power saved 2 million lives up to date. It turns out wind energy is far more dangerous than nuclear, two maintenance people died on a wind turbine while working on it in Netherland. Talking about environmental hazards by nuclear power is less due to less produce of nuclear waste that can be stored and managed in containment rooms. We need to change our views on Nuclear Power, this may help us a lot to fight against climate change for real.To all the readers, I ask a question. We know that Renewable Energy cannot save the planet, so could we allow them to destroy our planet? And would you support Nuclear energy in future to generate electricity? Think over it because our Future is in our hands.
PUBG Mobile India Re-entry
South Korean game developer PUBG Corporation and publisher KRAFTON announced that they have fully merged into a single entity. The company will be renamed to PUBG Studio and solely focus on development as PUBG Corp’s publishing and support teams have previously been integrated into KRAFTON.
KRAFTON’s independent studio portfolio currently consists of four studios including PUBG Studio, Striking Distance Studios, Bluehole Studio, and RisingWings. The AAA development studio Striking Distance Studios is currently developing an original narrative experience in the gaming Universe, while the Studio “will continue to seek ways to develop and expand the IP in various fields, including its esports and entertainment business.”
For fans, the move should be a good thing. The Corporation becoming PUBG Studio under Krafton means that the team can work autonomously to create its own unique vision on games. The battle royale has been going strong, and continues to be a mainstay in the genre since it released in 2017. According to the press release, The Studio will continue to develop and support Mobile version moving forward. The team has constantly added new content to its games and now we can some new innovations around the games.
Though PUBG has yet not clarified any official launch date, several media reports have come up with various dates on the launch. The latest date was said to be somewhere in the last week of December.
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