Can We Stop the Sun from Destroying Earth? Isaac Arthur returns to Event Horizon for his annual discussion with John Michael Godier about everything from alien machine civilizations, saving earth from the suns eventual expansion, and the future of humans in this universe.
Scientists at the recently opened SETI Post-Detection Hub at the University of St Andrews in Scotland have a daunting task ahead of them: figure out what…
What is the Drake Equation? We are talking about The Odds of ALIEN LIFE. Is there life out there in the Universe? How are the chances to find Extraterrestrial life?
We don’t know the answers to a lot of questions, for example: How many alien societies exist, and are detectable? Even though we don’t know how to answer such a question, we can at least try to figure it out with a little help from our beloved…Math. First, we have to have a pretty good idea about how the universe works, and of course about the star and planetary formation, as well as conditions for life as we know it. This means we have to study and collect a lot of data. Luckily for us, we – humans — aren’t so bad. Physics, astronomy, chemistry, biology and all-natural sciences offer us the hints for the mathematical set of parameters that will give us an equation to calculate the number of alien societies that exist and are detectable. Second, one has to sit down and think about which parameters should appear in the equation, and which not. Do you think it’s difficult? I think so. But luckily for us, in 1961 scientists Drake came up with a famous equation, that estimated the number of transmitting societies in the Milky Way Galaxy…
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Pity the poor astronomer. Biologists can hold examples of life in their hands. Geologists can fill specimen cabinets with rocks. Even physicists get to probe subatomic particles in laboratories built here on Earth. But across its millennia-long history, astronomy has always been a science of separation. No astronomer has stood on the shores of an alien exoplanet orbiting a distant star or viewed an interstellar nebula up close. Other than a few captured light waves crossing the great void, astronomers have never had intimate access to the environments that spur their passion.
Until recently, that is. At the turn of the 21st century, astrophysicists opened a new and unexpected era for themselves: large-scale laboratory experimentation. High-powered machines, in particular some very large lasers, have provided ways to re-create the cosmos, allowing scientists like myself to explore some of the universe’s most dramatic environments in contained, controlled settings. Researchers have learned to explode mini supernovas in their labs, reproduce environments around newborn stars, and even probe the hearts of massive and potentially habitable exoplanets.
How we got here is one of the great stories of science and synergy. The emergence of this new large-scale lab-based astrophysics was an unanticipated side effect of a much broader, more fraught, and now quite in-the-news scientific journey: the quest for nuclear fusion. As humanity has worked to capture the energy of the stars, we’ve also found a way to bring the stars down to Earth.
In this video, Unveiled takes a closer look at the concept of FREE WILL! Do humans have it? How can we prove it? And what if, actually, free will IS an illusion?? It’s one of the greatest questions in all of science and philosophy… but according to one theory, it just DOESN’T EXIST!
This is Unveiled, giving you incredible answers to extraordinary questions!
NOTE FROM TED: We’ve flagged this talk, which was filmed at a TEDx event, because it appears to fall outside TEDx’s curatorial guidelines. The sweeping claims and assertions made in this talk are based on the speaker’s own theory and lack legitimate scientific support. TEDx events are independently organized by volunteers. The guidelines we give TEDx organizers are described in more detail here: http://storage.ted.com/tedx/manuals/tedx_content_guidelines.pdf.
The origin of intelligent life on earth requires a host of statistically improbable events which may imply that similar intelligent life elsewhere is extremely unlikely, a fact mostly ignored in discussions about contacting extraterrestrial life.
“Marc Defant is a professor of geochemistry at USF and studies volcanoes through various funding such as the NSF and National Geographic. He has published research in Nature and other journals and has written a book on the history of the universe, earth and life. He was the keynote speaker at a conference on granitic rocks in China and was one of the first American scientists to work on volcanoes in Kamchatka when it was part of the Soviet Union. He is currently focused on emphasizing the importance of science in society.”
This talk was given at a TEDx event using the TED conference format but independently organized by a local community.
We now know of thousands of planets orbiting other stars. But we know of only planet that hosts life – the Earth. Most scientists think that life elsewhere in the Universe is likely to exist, but so far there is no evidence that extra-terrestrials exist or that they have visited us. However, we can search for signs of life on distant planets and we are even using radio telescopes to look for messages sent to us by extra-terrestrial civilisations. In this talk Tim will discuss the latest science behind the search for alien life.
Tim is a Professor of Astrophysics and an Associate Director of Jodrell Bank Centre for Astrophysics at The University of Manchester.
Tim’s research concentrates on the study of exploding stars using telescopes around the world and in space, working across the spectrum from radio waves to X-rays.
Tim is passionate about astrophysics and its power to inspire. Well known for his regular contributions to science on TV and radio, he is Jodrell Bank’s host for the hugely popular BBC TV Stargazing Live series and has a monthly space discussion programme on BBC Radio 5 Live.
In 2014, jointly with Professor Teresa Anderson, he was awarded the Kelvin Medal of the Institute of Physics for innovative public engagement, and in 2016 he was elected as President of the UK’s Society for Popular Astronomy.
This talk was given at a TEDx event using the TED conference format but independently organized by a local community.
2030: all above, and more, at professional level quality.
There’s a new Knives Out movie on Netflix, and I still haven’t seen a few of this season’s awards contenders. But the film I most wish I could watch right now is Squid Invasion From the Deep. It’s a sci-fi thriller directed by John Carpenter about a team of scientists led by Sigourney Weaver who discover an extraterrestrial cephalopod and then die one by one at its tentacles. The production design was inspired by Alien and The Thing; there are handmade creature FX and lots of gore; Wilford Brimley has a cameo. Unfortunately, though, I can’t see this movie, and neither can you, because it doesn’t exist.
For now, Squid Invasion is just a portfolio of concept art conjured by a redditor using Midjourney, an artificial-intelligence tool that creates images from human-supplied text prompts.
I disagree with this because consciousness ends after death.
Since the beginning of time, man has questioned what happens after death. Of course, there are a variety of typical answers to this question, but scientists may have just added an infinite number of other possibilities, just to shake things up.
According to Robert Lanza, M.D, death is actually a door to an endless number of universes. Furthermore, during our life, Lanza asserts that anything that possibly can happen is happening in some universe. He continues to explain that death does not exist in these scenarios since all of these possibilities are taking place at the same time. The only reason we associate our consciousness with our physical body is due to energy operating around in our brains.
