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Category: existential risks – Page 5

According to astrophysicist Erik Zackrisson’s computer model, there could be about 70 quintillion planets in the universe. However, most of these planets are vastly different from Earth — they tend to be larger, older, and not suited for life. Only around 63 exoplanets have been found in their stars’ habitable zones, making Earth potentially one of the few life-sustaining planets. This could explain Fermi’s paradox — the puzzling lack of evidence for extraterrestrial life. While we continue searching, Earth might be truly special.

After reading the article, Harry gained more than 55 upvotes with this comment: “If life developing on Earth the way it has is 1 in a billion, then this would imply that there is life on at least a billion other planets (?)”

The prevailing belief among astronomers is that the number of planets should at least match the number of stars. With 100 billion galaxies in the universe, each containing about a billion trillion stars, there should be an equally vast number of exoplanets, including Earth-like worlds — in theory.

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When the ‘God of chaos’ asteroid Apophis makes an ultraclose flyby of Earth in 2029, our planet’s gravity may trigger tremors and landslides that totally change the asteroid’s surface.

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Could Earth be a cosmic sanctuary for observation? The Zoo Hypothesis suggests so.

In 1950, Italian-American physicist Enrico Fermi famously asked, “Where is everybody?” The question has since become the basis of the Fermi Paradox, addressing the conflict between the high probability of extraterrestrial life and the complete lack of evidence for its existence. Several hypotheses have been proposed to explain this, including the Zoo Hypothesis, first introduced in 1973 by Harvard astrophysicist John A. Ball. This theory posits that advanced alien civilizations may know of Earth and its inhabitants but choose to avoid contact, allowing humanity to develop naturally without interference.

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The 3 Body Problem Explored: Cosmic Sociology, Longtermism & Existential Risk — round table discussion with three great minds: Robin Hanson, Anders Sandberg and Joscha Bach — moderated by Adam Ford (SciFuture) and James Hughes (IEET).

Some of the items discussed:
- How can narratives that keep people engaged avoid falling short of being realistic?
- In what ways is AI superintelligence kept of stage to allow a narrative that is familiar and easier to make sense of?
- Differences in moral perspectives — moral realism, existentialism and anti-realism.
- Will values of advanced civilisations converge to a small number of possibilities, or will they vary greatly?
- How much will competition be the dominant dynamic in the future, compared to co-ordination?
- In a competitive dynamic, will defense or offense be the most dominant strategy?

Many thanks for tuning in!

Have any ideas about people to interview? Want to be notified about future events? Any comments about the STF series?

Continue reading “The 3 Body Problem Explored — Robin Hanson, Anders Sandberg & Joscha Bach” | >

The two new studies place the sources of ordinary chondrite types into specific asteroid families – and most likely specific asteroids. This work requires painstaking back-tracking of meteoroid trajectories, observations of individual asteroids, and detailed modelling of the orbital evolution of parent bodies.

The study led by Miroslav Brož reports that ordinary chondrites originate from collisions between asteroids larger than 30 kilometres in diameter that occurred less than 30 million years ago.

The Koronis and Massalia asteroid families provide appropriate body sizes and are in a position that leads to material falling to Earth, based on detailed computer modelling. Of these families, asteroids Koronis and Karin are likely the dominant sources of H chondrites. Massalia (L) and Flora (LL) families are by far the main sources of L-and LL-like meteorites.

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The great George Church takes us through the revolutionary journey of DNA sequencing from his early groundbreaking work to the latest advancements. He discusses the evolution of sequencing methods, including molecular multiplexing, and their implications for understanding and combating aging.

We talk about the rise of biotech startups, potential future directions in genome sequencing, the role of precise gene therapies, the ongoing integration of nanotechnology and biology, the potential of biological engineering in accelerating evolution, transhumanism, the Human Genome Project, and the importance of intellectual property in biotechnology.

The episode concludes with reflections on future technologies, the importance of academia in fostering innovation, and the need for scalable developments in biotech.

00:00 Introduction to Longevity and DNA Sequencing.

Continue reading “Synthetic Biology: George Church on Genome Sequencing and De-Extinction” | >

Many seek a path to enlightenment through study and meditation, but what does science tell us about transcendence? And could entire civilizations seek to leave this reality behind?

Watch my exclusive video Exploring The Multiverse: https://nebula.tv/videos/isaacarthur–…
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Check out https://evodevouniverse.com/ to learn more about Transcension Hypothesis or the 2012 Paper:
https://www.researchgate.net/publicat…

Visit our Website: http://www.isaacarthur.net.

Continue reading “Transcendence: Enlightenment, Singularity & The Fermi Paradox” | >

The year’s biggest supermoon, the Hunter’s Moon, will rise in the sky next week. Astronomers have been thrilled to see three back-to-back supermoons this year, but October’s supermoon is going to be extra special.

It will be the only moon to come this close to Earth in 2024, making it appear extremely large. The supermoon will occur on October 17, reaching its fullest point merely hours after coming to its closest point. It will be 220,055 miles from Earth on this day.

The sky this month is filled with cosmic wonders. You can see two comets this month, with one of them already taking people’s breath away. The second comet will visit towards the end of October.

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