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Science & Space
The most popular blog posts about science & space on Hacker News. 4,455 posts.
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Common misconceptions about the complexity in robotics vs. AI (2024)
Common misconceptions about the complexity in robotics vs AI
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The Nobel Prize in Physiology or Medicine 2024
The Nobel Prize in Physiology or Medicine 2024 was awarded jointly to Victor Ambros and Gary Ruvkun "for the discovery of microRNA and its role in post-transcriptional gene regulation"
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New theory proposes ‘forgetting’ is a form of learning
The scientists behind the new theory suggest that rather than being a bug, forgetting may be a functional feature of the brain, allowing it to interact dynamically with the environment to enhance decision-making.
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New Horizons enters safe mode 10 days before Pluto flyby
New Horizons decided to put on a little 4th of July drama for the mission's fans. It's currently in safe mode, and it will likely be a day or two before…
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Pierogi in Space
In a first for space cuisine, ESA project astronaut Sławosz Uznański-Wiśniewski will bring pierogi, the traditional Polish dumplings, to the International Space Station during the upcoming Axiom Mission 4.
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Seeing Like a Data Structure
Our data-centric way of seeing the world isn't serving us well. Barath Raghavan and Bruce Schneier argue that we need new socio-technical systems that leave room for the inherent messiness of reality.
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Enzymes open new path to universal donor blood
Researchers at DTU and Lund University have discovered enzymes that remove hindrances that stood in the way of developing universal donor blood.
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The geometry of an electron determined for the first time
Physicists at the University of Basel are able to show for the first time how a single electron looks in an artificial atom. A newly developed method enables them to show the probability of an electron being present in a space. This allows improved control of electron spins, which could serve as the smallest…
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A look at Chang’e 5 telemetry
Chang’e 5 is a Chinese lunar sample return mission. It was launched a few days ago on 2020-11-23 from Wenchang and is estimated to perform lunar orbit injection on Saturday. Since then, a number of Amateurs such as USA Satcom , Paul Marsh M0EYT , Scott Tilley VE7TIL , Fer IW1DTU and others have been receiving the…
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Giant leap against Diabetes
Harvard stem cell researchers announced a giant leap forward in the quest to find a truly effective treatment for type 1 diabetes, a disease that affects an estimated 3 million Americans.
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Beautiful Abelian Sandpiles
I can't remember where I first saw them, but ever since, I have been unable to forget them: abelian sandpiles. I'm far from the only one . They're remarkably simple, yet produce lovely symmetric patterns. I loved them so much that I adorned the title banner of this blog with an animation of an abelian sandpile. But…
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CERN at Home: Building a Particle Detector
What do you do when you’re stuck at home with a 16-year-old son during a pandemic lockdown? Well, the first answer is that you build a gaming PC. That was a good project with a lot of incentives to complete, but that also meant it was soon over. So, what next? I spotted a post about an outreach project from CERN to…
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Quantum Computing for the Curious
Presented in an experimental mnemonic medium that makes it almost effortless to remember what you read
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10-year-old problem in theoretical computer science falls
Interactive proofs — mathematical games that underlie much modern cryptography — work even if players try to use quantum information to cheat.
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‘Vegan spider silk’ provides sustainable alternative to single-use plastics
Researchers have created a plant-based, sustainable, scalable material that could replace single-use plastics in many consumer products.
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Why can't we just give steroids to people with muscular dystrophy?
I like to start all my scientific inquiries off with really dumb questions. It makes life more fun. Here’s my latest: why can’t we just give steroids to people with muscular dystrophy?
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The most powerful MRI scanner in the world delivers its first images
September 2021, the 11.7 Tesla MRI of the Iseult project, the most powerful in the world for human imaging, has just unveiled its first images.
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Why does F = ma?
By Michael Nielsen, November 23, 2019
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Neurons outside the brain
The three brains in our body
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Common cold combats Covid-19
A new Yale-led study finds that immune system activity jump-started by rhinovirus exposure could prevent or treat the early stages of COVID-19 infection.
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A living replacement knee to be tested in clinical trials within five years
Columbia biomedical engineers are collaborating with orthopedic surgeons to build a living replacement knee to be tested in clinical trials within five years.
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The Fall and Rise of Screwworm
Every spring, as sure as the seasons, and for generations unknown, screwworms began their annual march northward from their overwintering sanctuaries in Mexico and South Texas.
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Problem solving with dimensional analysis
A dimension is a physical quantity that can be measured, while a unit is a specific amount of a physical quantity. For example, time is a dimension, which can be measured in temporal units such as hours or seconds.
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How old were the inventors of major inventions?
I came across this fun column the other day listing a number of Famous Inventions , like the airplane, the camera, electricity, the car, e...
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Cartoon Laws of Physics
Cartoon Law I Any body suspended in space will remain in space until made aware of its situation. Daffy Duck steps off a cliff, expecting further pastureland. He loiters in midair, soliloquizing flippantly, until he chances to look down. At this point, the familiar principle of 32 feet per second per second takes over.
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Theoretical way to levitate objects with light
Specially designed materials enable objects of different sizes to be levitated and manipulated with light, thanks to new research from Caltech scientists.