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Stephen Hawking was one of the greatest scientific and analytical minds of our time, says NASA’s Michelle Thaller. She posits that Hawking might be one of the parents of an entirely new school of physics because he was working on some incredible stuff—concerning quantum entaglement— right before he died. He was even humble enough to go back to his old work about black holes and rethink his hypotheses based on new information. Not many great minds would do that, she says, relaying just one of the reasons Stephen Hawking will be so deeply missed. You can follow Michelle Thaller on Twitter at @mlthaller.

Continue reading “What Stephen Hawking would have discovered if he lived longer | NASA’s Michelle Thaller | Big Think” »

If life is common in our Universe, and we have every reason to suspect it is, why do we not see evidence of it everywhere? This is the essence of the Fermi Paradox, a question that has plagued astronomers and cosmologists almost since the birth of modern astronomy.

It is also the reasoning behind the Hart-Tipler Conjecture, one of the many (many!) proposed resolutions, which asserts that if advanced life had emerged in our galaxy sometime in the past, we would see signs of their activity everywhere we looked. Possible indications include self-replicating probes, megastructures, and other Type III-like activity.

Continue reading “Physicists Say Aliens May Be Using Black Holes as Quantum Computers” »

Scientists investigate an underwater alien orb in this costly adaptation of Michael Crichton’s 1987 bestseller.

Science_Hightech — operanewsapp.

Stellar astronomer and TED Senior Fellow Lucianne Walkowicz works on NASA’s Kepler mission, searching for places in the universe that could support life. So it’s worth a listen when she asks us to think carefully about Mars. In this short talk, she suggests that we stop dreaming of Mars as a place that we’ll eventually move to when we’ve messed up Earth, and to start thinking of planetary exploration and preservation of the Earth as two sides of the same goal. As she says, “The more you look for planets like Earth, the more you appreciate our own planet.”

A more frightening implication of the fermi paradox.

The berserker hypothesis, also known as the deadly probes scenario, is the idea that humans have not yet detected intelligent alien life in the universe because it has been systematically destroyed by a series of lethal Von Neumann probes.^[1][2] The hypothesis is named after the Berserker series of novels (1963−2005) written by Fred Saberhagen.^[1]

The hypothesis has no single known proposer, and instead is thought to have emerged over time in response to the Hart–Tipler conjecture,^[3] or the idea that an absence of detectable Von Neumann probes is contrapositive evidence that no intelligent life exists outside of the Sun’s Solar System. According to the berserker hypothesis, an absence of such probes is not evidence of life’s absence, since interstellar probes could “go berserk” and destroy other civilizations, before self-destructing.

In his 1983 paper “The Great Silence”, astronomer David Brin summarized the frightening implications of the berserker hypothesis: it is entirely compatible with all the facts and logic of the Fermi paradox, but would mean that there exists no intelligent life left to be discovered. In the worst-case scenario, humanity has already alerted others to its existence, and is next in line to be destroyed.^[4].

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Did We Find Them? 8 Candidate Alien Signals Found with a new AI Algorithm by SETI.

A deep-learning search for technosignatures of 820 nearby stars.
https://seti.berkeley.edu/ml_gbt/MLSETI_NatAstron_arxiv3.pdf.

Continue reading “8 Candidate Alien Signals From 5 Stars Found by AI Algorithm with Dr. Cherry Ng and Peter Ma” »

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Continue reading “Hycean Planets & Ice Worlds” »