Problem

Do we live in a simulation? The problem with this mind-bending hypothesis.

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Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of “Ask a Spaceman” and “Space Radio,” and author of “How to Die in Space.” Sutter contributed this article to Space.com’s Expert Voices: Op-Ed & Insights. Is everything we know and experience, up to and including reality itself, a simulation … Read more

Expansion of the universe: Conflicting measurements are becoming a serious problem

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The Hubble constant describes how fast the universe is expanding, but our measurements won’t line up, which may mean our standard model of the universe is wrong Space 20 January 2022 By Leah Crane Images taken by the Hubble Space Telescope of galaxies looked at in the study ESA The expansion of the universe is … Read more

Perseverance Has Run Into a Problem on Mars: Pebbles

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A small pile of pebbles is clogging up the Perseverance Mars rover’s operations.   The rover, which is collecting rock samples for eventual return to Earth, began to struggle on Dec. 29, after extracting a core from a rock the mission team nicknamed “Issole.”   According to a NASA blog, the problem occurred in the device that transfers … Read more

Physicists crack unsolvable three-body problem using drunkard’s walk

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A physics problem that has plagued science since the days of Isaac Newton is closer to being solved, say a pair of Israeli researchers. The duo used “the drunkard’s walk” to calculate the outcome of a cosmic dance between three massive objects, or the so-called three-body problem. For physicists, predicting the motion of two massive … Read more

Why Discovering ‘Nothing’ in Science Can Be So Incredibly Important

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In science, as in life, we all like to celebrate the big news. We confirmed the existence of black holes by the ripples they create in space time. We photographed the shadow of a black hole. We figured out how to edit DNA. We found the Higgs boson!   What we don’t usually hear about is … Read more

Hacking the Ransomware Problem – Scientific American

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During a ransomware hack, attackers infiltrate a target’s computer system and encrypt its data. They then demand a payment before they will release the decryption key to free the system. This type of extortion has existed for decades, but in the 2010s it exploded in popularity, with online gangs holding local governments, infrastructure and even … Read more