Does time come from the entire universe running computations? Explaining the passage of time has been a gnarly problem in physics basically forever, but physicist and computer scientist Stephen Wolfram has a radical proposal for where it comes from. What if the universe is just one big computer? My colleagues and I have a running joke: time isn't real. Oh, you thought that deadline was tomorrow, but it's actually today?

What if the Universe Isn't as Uniform as Scientists Think? A study based on 47 million galaxies found that the cosmic web retains patterns on enormous scales, which could force a reevaluation of a pillar of cosmology. One of the fundamental pillars of modern cosmology may be beginning to wobble. A study published in Nature has found evidence that the universe may not behave the same way in every direction on the largest observable scales. "What we found is a network of enormous filaments and walls of galaxies that remain aligned and interconnected across billions of light-years," says Francesco Sylos Labini, research director of physics at the Enrico Fermi Research Center in Italy and the study's lead author. What Should the Universe Look Like?

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Why Real-Life Disclosure Day Will Look Nothing Like Steven Spielberg's New Movie Previous landmark scientific discoveries like the Higgs boson provide a better template for what it will take to confirm whether aliens have made contact with Earth. Steven Spielberg's new film imagines the moment 8 billion humans find out that we are not alone in the universe. The movie, which opens in US theaters on June 12, is a fictional account of the government cover-up and subsequent "disclosure" of evidence that aliens have contacted Earth. The UFO community has been chasing that type of cinematic big reveal for 80 years. But it's more likely that monumental scientific discoveries, like the detection of the Higgs boson in 2012 and the confirmation of gravitational waves in 2016, are a better guideline for how real-world disclosure is likely to play out: through long-running research and with verifiable results.

Despite AI's dizzying improvements in mathematical ability, its successes show just how integral human mathematicians are to the scientific process In 1915, Albert Einstein stood before the Prussian Academy of Science and revealed the now-famous equations of his general theory of relativity. Einstein and relativity are synonymous today with genius, but these revelations were initially met with indifference, in part because the maths was too radical for his peers to fully digest. Today, tech firms would have us believe we are on the brink of "superintelligent" artificial intelligence capable of outperforming experts in most domains, producing scientific breakthroughs on a par with Einstein. As Anthropic CEO Dario Amodei put it, we will see " a country of geniuses in a datacenter ". Claims like these are often provided with little evidence, and identifying genius or elevated intelligence is a murky endeavour.

Science Space Could aliens ever visit Earth? The universe is vast and teeming with stars - but if intelligent life exists, it may not be able to visit Earth. More information Adding us as a Preferred Source in Google by using this link indicates that you would like to see more of our content in Google News results. On May 22, 2026, the Pentagon released a second batch of previously classified photos and videos showing what appear to be unexplained flying objects. These file dumps were the culmination of a process that was set in motion back in July 2023, when a group of government whistleblowers testified before Congress that the U.S. government was secretly in possession of extraterrestrial spacecraft and suspected alien body parts.

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Plus: the first zero-day exploit built by AI has been discovered. A few months before he won the Nobel Prize in economics in 2024, Daron Acemoglu published a paper that earned him few fans in Silicon Valley. He argued that AI would give only a small boost to US productivity and would not eliminate the need for human work. Two years later, Acemoglu's measured take has not caught on. The technology has advanced quite a bit since his cautious predictions, but the data is still largely on his side. Here are the three things Acemoglu is paying closest attention to in AI right now .

One of the best-performing models in cosmology is also one with the least physical rationale behind it. Can a theory of quantum gravity illuminate what happened just after the big bang? Cosmic inflation is a problem. During the first tiny fraction of a second of the universe, it is generally believed that the universe expanded by a factor of around 10. And then, as quickly as it began, this exponential growth just stopped.

While there remains a small gap between our main lower bound of Theorem 3 and the deterministic quantised gradient descent of Section 6, we can show that the gap cannot be closed by improved deterministic algorithms where the coordinator learns value of objective function F(x) in addition to the minimiser x. That is, our quantised gradient descent is the communication-optimal deterministic algorithm for variant (1) for objectives with constant condition number. Recall that in the N-player equality over universe of size d, denoted by EQd,N, each player i is given an input bi 2{ 0,1}d, and the task is to decide if all players have the same input. It is known [33] that the deterministic communication complexity of EQd,N is CC(EQd,N)= ( Nd). Theorem 8. Given parameters N, d, ", 0 and = 0N satisfying d /" = (1), any deterministic protocol solving (1) for quadratic input functions x 7! 0kx x0k22 has communication complexity Nd log( d/"), if the coordinator is also required to output estimate r 2 R for the minimum function value such that Assume is a deterministic protocol solving (1) with communication complexity C .We show that can then solve N-party equality over a universe of size D = ( dlog( d/")), implying C = ( ND)= Nd log( d/") . More specifically, let S be the set given by Lemma 2 with =(2 "/)1/2, and let D = dlog|S|e = (dlog( d/")). Note that since we assume d /" = (1), the set S has at least two elements and D 1.