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How Do We Search for New Planets Documentary - A New Look at Searching for Life Beyond Earth

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A New Look at Searching for Life Beyond Earth Documentary - How Do We Search for New Planets

The explosion of knowledge of planets orbiting other stars, called exoplanets, and the results of decades of research on signatures of life - what scientists call biosignatures - have encouraged NASA to address, in a scientifically rigorous way, whether humanity is alone. Beyond searching for evidence of just microbial life, NASA now is exploring ways to search for life advanced enough to create technology.

Technosignatures are signs or signals, which if observed, would allow us to infer the existence of technological life elsewhere in the universe. The best known technosignature are radio signals, but there are many others that have not been explored fully.
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Finding Life Beyond Earth and Solar System NOVA Full Documentary

Take a trip to distant realms of our solar system to discover where secret forms of life may lie hidden. Combining the latest telescope images with dazzling animation, this program immerses audiences in the sights and sounds of alien worlds, while top astrobiologist explain how these places are changing how we think about the potential for life in our solar system. We used to think our neighboring planets and moons were fairly boring mostly cold, dead rocks where life could never take hold. Today, however, the solar system looks wilder than we ever imagined.
Powerful telescopes and unmanned space missions have revealed a wide range of dynamic environments, atmospheres thick with organic molecules, active volcanoes, and vast saltwater oceans. This ongoing revolution is forcing scientists to expand their ideas about what kinds of worlds could support life. If we do find primitive life-forms elsewhere in the solar system, it may well be that life is common in the universe the rule, and not the exception.
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PLANET JUST LIKE EARTH: Alien Life - National Geographic Documentary HD

When NASA began 60 years ago, we had questions about the universe humans had been asking since we first looked up into the night sky. In the six decades since, NASA, along with its international partners and thousands of researchers, have expanded our knowledge of the Universe by using a full fleet of telescopes and satellites. From the early probes of the 1950s and 1960s to the great telescopes of the 1990s and 21st century, NASA scientists have been exploring the evolution of the universe from the Big Bang to the present.

The Great Observatories
NASA astronomers use several kinds of telescopes in space and on the ground. Each observes targets like stars, planets, and galaxies, but captures different wavelengths of light using various techniques to add to our understanding of these cosmic phenomenon.
Dark Matter
NASA telescopes have helped us better understand this mysterious, invisible matter that is five times the mass of regular matter. The first direct detection of dark matter was made in 2007 through observations of the Bullet Cluster of galaxies by the Chandra x-ray telescope.

Black Holes
Although we can’t “see” black holes, scientists have been able to study them by observing how they interact with the environment around them with telescopes like Swift, Chandra, and Hubble. In 2017, NASA's Swift telescope has mapped the death spiral of a star as it is consumed by a black hole. This year, astronomers using Chandra have discovered evidence for thousands of black holes located near the center of our Milky Way galaxy.
Galaxies
A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, held together by gravity. Some are spiral-shaped like our Milky Way Galaxy; others are smooth and oval shaped. NASA telescopes are helping us learn about how galaxies formed and evolved over time.
Exoplanets
Just 30 years ago, scientists didn’t know if there were planets orbiting other stars besides our own Sun. Now, scientists believe every star likely has at least one exoplanet. They come in a wide variety of sizes, from gas giants larger than Jupiter to small, rocky planets about as big as Earth or Mars. They can be hot enough to boil metal or locked in deep freeze. They can orbit their stars so tightly that a “year” lasts only a few days; they can even orbit two stars at once. Some exoplanets don’t orbit around a star, but wander through the galaxy in permanent darkness. NASA’s Kepler spacecraft and newly-launched Transiting Exoplanet Survey Satellite are helping us find more distant worlds
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Does Alien Life Exist - Most Compelling Evidence Of Alien Existence | Space Documentary 2020 Full HD

Does Alien Life Exist - Most Compelling Evidence Of Alien Existence | Space Documentary 2020 Full HD
Some say it’s obvious we’re not alone, others scorn the very idea and still others yet will hauntingly report their own experiences of alien probings following their casual night-time stroll through the fields of small town America. But with everything from increasingly bizarre reportings from increasingly credible sources, to basic mathematical probability suggesting the likelihood of alien life, these days, scepticism is harder won. Whatever your opinions, you may well find that the following examples have some impact on them.
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Search for Life in the Universe Documentary - New Discoveries Never Before Seen

Search for Life in the Universe Documentary - New Discoveries Never Before Seen

Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.

Finding the Next Earth | Full Documentary

Teams of astronomers around the world are racing to find for the first time ever the exact location of the ultimate prize in space exploration--a living world, just like our own planet Earth.

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Earth like Planets - Documentary

What are the odds of life on planets orbiting nearby stars? Scientists, wielding sensitive new telescopes and big data tools, have detected planets around thousands of stars; some Sun-like and some very different from our star. Many newly discovered exoplanets lie in habitable zones, where liquid water may support the chemistry that enables biology. How will astronomers discover if we have company in the cosmos...and where they live?

Interstellar voyage to find the Second Earth | Space Documentary 2020

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A documentary showcasing interstellar travel to visit an Earth-like planet, a bonified Earth 2.0 to see if there is life on it. Follow this amazing adventure in state of the art CGI and with the world's leading scientists.

The Search For A Second Earth - Space Documentary HD

In the 400 years since Galileo Galilei first held a telescope to the heavens, astronomers have laid bare some of the deepest mysteries of the cosmos. They have seen comets crash into planets, found oceans inside moons, and witnessed the shudder of spacetime as black holes collide.

But space remains a realm of the unknown. Writing in the journal Nature on Thursday, scientists in Canada reported the detection of mysterious radio signals from halfway across the universe. It is only the second time that repeating fast radio bursts, or FRBs, have been spotted.

Astronomers have yet to formulate a full theory of what produces these enigmatic, rapid-fire beams of electromagnetic waves. And in the absence of a firm explanation, speculation has fallen, perhaps inevitably, on alien civilisations. Avi Loeb, a Harvard astronomer, has proposed that FRBs might be powerful energy beams used to propel alien spacecraft.

It is not the first time that poorly-understood cosmic phenomena have been ascribed to industrious extraterrestrials. When in 2015 astronomers noticed a star, 1,500 light years distant, dimming and brightening, researchers suggested an “alien megastructure” might be revolving around it, and collecting energy for its constructors. Then, in 2017, the massive cigar-shaped ‘Oumuamua barrelled into the solar system, the first interstellar object known to do so, and prompted speculation that it was a tumbling spacecraft.

Chris French, head of the Anomalistic Psychology Research Unit at Goldsmiths, University of London, said it was natural for humans to see aliens behind every cosmic mystery. “We have what is called an intentionality bias,” he said. “It’s the assumption that whenever something happens, something or someone made it happen for a reason. In the context of space, that someone is always going to be aliens.”

The evolutionary argument for intentionality bias, or “agenticity”, is that our ancient ancestors fared better if a rustle in the bushes made them run for cover rather than assume it was the wind. “At the end of the day, our brains evolved to keep us alive rather than apprehend the truth of the universe,” said French.

The late astronomer Carl Sagan spotted the dilemma for scientists. They can become cranks if they are too open-minded, but may miss out on landmark discoveries if they are not open-minded enough. “It seems to me what is called for is an exquisite balance between two conflicting needs,” he said. “The most sceptical scrutiny of all hypotheses that are served up to us and at the same time a great openness to new ideas.”

Duncan Lorimer, an astrophysicist at West Virginia University, discovered the first FRB in 2007. When his team spotted the radio burst, the possibility of it being a message from ET certainly came up. “We absolutely thought about aliens,” he said. “We only had the one object. We looked for patterns in the signal and couldn’t find anything, but we definitely considered it.”

Now, mention of aliens is beginning to wear thin. “It helps to sell the story, but at this point I do roll my eyes a bit,” he said. Many astronomers now favour the idea that FRBs are intense beams of radiation shed by charged particles as they are whipped around by strongly magnetised neutron stars. “It seems like a more plausible idea, but I don’t want to rule out aliens completely,” he said. “I’ve been wrong before.”

ANOTHER EARTH: Alien Planet - Space Documentary HD

We Are Not Alone In The Universe
I cannot imagine any single discovery that would have more impact on humanity than the discovery of life outside of our solar system. There is a human-centric, Earth-centric view of life that permeates most cultural and societal thinking. Finding that there are multiple, perhaps millions of origins of life and that life is ubiquitous throughout the universe will profoundly affect every human.

We live on a microbial planet. There are one million microbial cells per cubic centimeter of water in our oceans, lakes, and rivers; deep within the Earth's crust and throughout our atmosphere. We have more than 100 trillion microbes on and in each of us. The Earth's diversity of life would have seemed like science fiction to our ancestors. We have microbes that can withstand millions of Rads of ionizing radiation; such strong acid or base that it would dissolve our skin; microbes that grow in ice and microbes that grow and thrive at temperatures exceeding 100 degrees C. We have a life that lives on carbon dioxide, on methane, on sulfur, or on sugar. We have sent trillions of bacteria into space over the last few billion years and we have exchanged material with Mars on a constant basis, so it would be very surprised if we do not find evidence of microbial life in our solar system, particularly on Mars.

The recent discoveries by Dimitar Sasselov and colleagues of numerous Earth and super-Earth-like planets outside our solar system, including water worlds, greatly increases the probability of finding life. Sasselov estimates approximately 100,000 Earth and super-Earths within our own galaxy. The universe is young so wherever we find microbial life there will be intelligent life in the future.

Expanding our scientific reach further into the skies will change us forever.

#aliens #ufo #arewealone #trending
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Aliens ???? Earth | Alien Life Planet - Documentary HD

Extraterrestrial life is hypothetical life that may occur outside of Earth and which did not originate on Earth. Such life might range from simple prokaryotes to beings with civilizations far more advanced than humanity. The Drake equation speculates about the existence of intelligent life elsewhere in the universe.

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Finding Life Beyond Earth and Solar System NOVA National Geographic Documentary 2016 HD

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Take a spectacular trip to distant realms of our solar system to discover where secret forms of life may lie hidden. Combining the latest telescope images with dazzling animation, this program immerses audiences in the sights and sounds of alien worlds, while top astrobiologists explain how these places are changing how we think about the potential for life in our solar system. We used to think our neighboring planets and moons were fairly boring—mostly cold, dead rocks where life could never take hold. Today, however, the solar system looks wilder than we ever imagined.
Powerful telescopes and unmanned space missions have revealed a wide range of dynamic environments—atmospheres thick with organic molecules, active volcanoes, and vast saltwater oceans. This ongoing revolution is forcing scientists to expand their ideas about what kinds of worlds could support life. If we do find primitive life-forms elsewhere in the solar system, it may well be that life is common in the universe—the rule, and not the exception.

What Makes A Planet Habitable? – New Mini Documentary

There are many planets in the entire universe, but as far as we know, there is only a handful which could possibly support life. Space scientists and astronomers continuously scour the vastness of space for finding signs of life elsewhere in the solar system and even outside of it. Now, taking one celestial body at a time and devoting all your time and resources to ascertain whether it supports life would be too imprudent and wasteful. That’s why, astronomers look for certain pointers in a celestial body, and then determine if it has the potential to support life, or in other words, whether it’s habitable.

So, what are the requirements for a planet to support life? Are there more habitable planets?

These are some of the questions which we will explore today on Forbidden Knowledge.

Some things in life are known only by a few and those who possess this knowledge, rule the world. Subscribe to Forbidden Knowledge for weekly videos to expand your mind. Thanks for Watching.

#Planets #Science #AreWeAlone

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Alien Earth | Life Beyond Earth - Full Documentary HD #Advexon

Alien Earth | Life Beyond Earth
One of eight new planets spied in distant solar systems has usurped the title of most Earth-like alien world, astronomers have said.
All eight were picked out by Nasa's Kepler space telescope, taking its tally of such exoplanets past 1,000.
But only three sit safely within the habitable zone of their host star - and one in particular is rocky, like Earth, as well as only slightly warmer.
The find was revealed at a meeting of the American Astronomical Society.
Red sky
The three potentially habitable planets join Kepler's hall of fame, which now boasts eight fascinating planetary prospects.
And researchers say the most Earth-like of the new arrivals, known as Kepler 438b, is probably even more similar to our home than Kepler 186f - which previously looked to be our most likely twin.
At 12% larger than Earth, the new claimant is bigger than 186f but it is closer to our temperature, probably receiving just 40% more heat from its sun than we do from ours.
So if we could stand on the surface of 438b it may well be warmer than here, according to Dr Doug Caldwell from the Seti (Search for Extra-Terrestrial Intelligence) Institute in California.
And it's around a cooler [red dwarf] star... so your sky would look redder than ours does to us, Dr Caldwell said.
That first-person encounter, however, is unlikely - both because the planet is 475 light-years away and because we still have essentially no idea what it's made of.
Images from the Kepler telescope, which trails behind the Earth and peers far into the distance as we orbit our own sun, are used to identify far-off planets by observing transits.
This refers to the dimming of a star's light when a planet passes in front of it. A large team of researchers then uses additional data from Earth-bound telescopes to further explore these unfamiliar solar systems.
They try to calculate how big the planets are, and how closely they orbit their host stars.
Not everything that causes such a dimming eventually turns out to be a planet, however.
At the same time as the eight confirmed new exoplanets were announced by a 26-strong team spanning Nasa and multiple US institutions, the Kepler mission's own scientists released another tranche of more than 500 candidate planets.
With further observation, some of these candidates may turn out not to be planets, said Kepler science officer, Fergal Mullally.
Or as we understand their properties better, they may move around in, or even outside, the habitable zone.
'Star Trek' scenario
Even once scientists have anointed a candidate as a confirmed exoplanet, the question of whether or not it is Earth-like is a fraught one, with fuzzy boundaries.
The size of the habitable, or Goldilocks zone, where a planet is far enough from its sun to hold water but not so distant that it freezes, depends on how confident scientists want to be with their guess-work.
According to Dr Cardwell, just three of the eight new exoplanets can be confidently placed in that zone - and only two of those are probably rocky like the Earth.
More detailed description is very difficult.
From the Kepler measurements and the other measurements we made, we don't know if these planets have oceans with fish and continents with trees, Dr Caldwell told BBC News.
All we know is their size and the energy they're receiving from their star.
So we can say: Well, they're of a size that they're likely to be rocky, and the energy they're getting is comparable to what the Earth is getting.
As we fill in these gaps in our solar system that we don't have, we learn more about what it means to be Earth-like, in some sense.
Speaking at a related event at the conference, Prof Debra Fischer from Yale University said she remembered a time before the first exoplanet was discovered, more than two decades ago.
I remember astronomers before that point being very worried, she said.
We really had to step back and say: Maybe the Star Trek picture is wrong. That filled me with despair.
Prof Fischer said that sensitive telescopes like Kepler had ushered in an era of amazing and impressive work.
We're talking about a planet - and we can only see its star with a powerful telescope.
And we can draw graphs and sketch its composition and have serious scientific discussions. This is incredible.
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Is There Life Beyond Earth?

Scientists are leaping exponentially closer to finding life beyond Earth. Missions to Mars and Saturn’s moons are prime candidates for finding the first signs of life and NASA can now identify more than 3,500 planets outside our solar system, many with habitable temperatures. That number is quickly growing as space travel technology improves and probes head deeper into the galaxy.

Nuclear physicist Taylor Wilson explores one of our civilization's most perplexing questions: Are we alone?

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Is Anybody Out There? (Alien Life Documentary) | Spark

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With technology advancing faster than ever, and more and more discoveries being made every day, is the day we contact extraterrestrial life almost here?

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Bizarre Solar System Discoveries of the Planets That Will Make Your Hair Stand Up

Our solar system is a bizarre place with its alien planets, mysterious moons ... Scientists have discovered ice-spewing volcanoes on Pluto, while Mars ... to the sun, when the atmosphere would have been heated the most. ... and have been lucky enough to get close-up pictures of dozens of celestial objects.

Scientists Are Amazed At What Hubble Discovered In Space!

On April 24, 1990, the Hubble telescope set out into space and wrote space history. The space telescope was jointly developed by NASA and ESA, making direct cooperation between the European and American space agencies possible. It was named after the exceptional astronomer Edwin P. Hubble, who lived in the early 19th century. For more than 30 years, the telescope has been sending us breathtaking images from his expeditions to the still unknown parts of space, literally shedding light on the mysterious secrets of our solar system. A picture of the Hubble telescope can be found in many German waiting rooms or denounced on expensive illustrated books in hotel lobbies. But is this hype about the space telescope justified and were the extremely expensive development costs for the Hubble telescope really worth it? What could Hubble tell us so far about our solar system? What groundbreaking discoveries has it brought to mankind? Indeed, Hubble has fundamentally and lastingly changed the knowledge we have about the universe.

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[Space Documentaries] Finding Life Beyond Earth - New Science Documentary 2014 F

[Space Documentaries] Finding Life Beyond Earth - New Science Documentary 2014 Full HD▶ Watch HANGOVER feat. Snoop Dogg M/V @


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© YG Entertainment Inc. All rights reserved.Early Modern England: Politics, Religion, and Society under the Tudors and Stuarts (HIST 251)

In this lecture, Professor Wrightson discusses witchcraft and magic. He begins with the context of magic beliefs in this period, introducing the 'cunning folk' who had reputations as healers and were often consulted. He then considers the specific problem of witchcraft, the use of magic to do harm, and its identification by the late medieval church as a form of anti-Christian cult. He examines the distinctive nature of both witchcraft beliefs and the history of witchcraft prosecution in England (as compared with both Scotland and continental Europe), outlining the typical circumstances of a witchcraft accusation and what these might suggest about the rise and fall of concern with witchcraft. Finally he considers a number of unresolved problems in the history of witchcraft in England: the nature of the links between gender and witchcraft; the reasons behind the passage of the statutes defining witchcraft as a crime; and the exceptionally large number of trials conducted in the county of Essex.

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This course was recorded in Fall 2009.Videogames, digital pens, holograms and tactile learning platforms could all become the norm as education looks set to change dramatically over the next 30 years. With technology dominating in and outside the classroom, interconnectivity is likely to play a key role in helping students adapt to the changing world around them.VIDEOGRAPHICSarah Woolley talks about the significance of bird songs and how they are useful in researching human development disordersSometimes you promise someone forever but it doesn’t work out that way. Watch Katy Perry and Diego Luna star in the sixth chapter of the “Teenage Dream” story. Do you have “The One That Got Away”?
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ANOTHER EARTH | KEPLER 186F - Full Documentary

If Alien exist where do they live and how do they live?
Scientists say a world that's 490 light-years away qualifies as the first confirmed Earth-sized exoplanet that could sustain life as we know it — but in an environment like nothing we've ever seen.
The planet, known as Kepler-186f, is more of an Earth cousin than an Earth twin, Elisa Quintana, an astronomer at the SETI Institute at NASA Ames Research Center, told the journal Science. Quintana is the lead author of a report on the planet published by Science this week.
This discovery does confirm that Earth-sized planets do exist in the habitable zones of other stars, Quintana said during a Thursday news briefing at NASA Headquarters.
Kepler-186f goes around an M-type dwarf star that's smaller and cooler than our sun. But it orbits much closer to its parent star than Earth does, within what would be Mercury's orbit in our own solar system. Those two factors combine to produce an environment that could allow for liquid water on the surface, assuming that the planet had a heat-trapping atmosphere.

The star, to our eyes, would look slightly orange-y, about a third again as big as our sun but only a third as bright, said co-author Thomas Barclay, a staff scientist for NASA's Kepler mission who is also affiliated with NASA and the Bay Area Environmental Research Institute. At midday, Kepler-186f's landscape might look similar to what we see on Earth an hour before sunset, he told NBC News.
Or it might not: If the planet lacked an atmosphere to retain and redistribute its sun's warmth, it would be a cold, dry, lifeless world.

Kepler-186f probably rates as the most potentially Earthlike planet discovered so far, said Jim Kasting, a geoscientist at Penn State University who did not play a role in the Science study. But he told NBC News that it's still less likely to be habitable than planets around more sunlike stars. Even better prospects for alien habitability might well be identified in the months and years to come.

How the world was found

Kepler-186f is just the latest discovery to be pulled out of terabytes' worth of data collected by the Kepler mission. Before it went on the fritz last year, the Kepler space telescope stared at more than 150,000 stars in a patch of sky, looking for the telltale dimming of starlight as planets passed over the stars' disks. Nearly 1,000 exoplanets have been confirmed using Kepler data, and almost 3,000 more candidates are still awaiting confirmation.

It takes years of observation to confirm the pattern of dimming and brightening that's associated with alien planets, particularly if the planets are small and far from their parent stars. In February, astronomers reported that at least four worlds circled the dwarf star known as Kepler-186 or KOI-571. In this week's Science paper, Quintana and her colleagues confirm the existence of Kepler-186f as the fifth and outermost world.
They report that Kepler-186f is about 10 percent wider than Earth, tracing a 130-day orbit around its sun at a mean distance of 0.35 astronomical units. (An astronomical unit is the distance between Earth and our sun, which is 93 million miles or 150 million kilometers.) That would put Kepler-186f on the cooler, outer side of the star's habitable zone — the range of orbital distances where liquid water could exist on a planet's surface.

Astronomers have confirmed the existence of other planets in their stars' habitable zone, but those prospects are super-Earth-size. Smaller habitable-zone candidates also have been found, but they have yet to be confirmed as planets.

Barclay said Kepler-186f was particularly promising because it's less than 1.5 times the size of Earth. Planets in that size range are more likely to be rocky with a thinner atmosphere, like Earth, Mars and Venus. But worlds exceeding that size stand a better chance of retaining a thick atmosphere of hydrogen and helium, like the giant planet Neptune.

While those planets also could be rocky, they don't remind us of home, Barclay said.
Could we actually detect signs of life on Kepler-186f? That's a tough one. The astronomers behind the discovery acknowledge that the planet might be just too far away for follow-up studies. The SETI Institute has been searching for radio signals from the Kepler-186 system over a wide frequency range (1 to 10 GHz), but so far nothing has been detected.

(Advexon)

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