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May 3, 2024
NASA plasma propulsion project promises Mars in a flash
Posted by Dan Breeden in categories: energy, space
As well as slashing travel time to neighboring planets, PPR promises to support the transport of much heavier spacecraft, which can benefit from shielding against galactic cosmic rays, allowing space travelers to spend longer periods outside Earth’s protective dome.
The latter will be the subject of the NASA Innovative Advanced Concepts (NIAC) study, which is focusing on a large, heavily shielded ship to transport humans and cargo to Mars for the development of a Martian base.
“The main topics included: assessing the neutronics of the system, designing the spacecraft, power system, and necessary subsystems, analyzing the magnetic nozzle capabilities, and determining trajectories and benefits of the PPR. Phase II will build upon these assessments and further the PPR concept,” NASA said.
May 3, 2024
The Big Bang, as Simple as Possible
Posted by Dan Breeden in categories: cosmology, evolution, particle physics
The big bang is the model that describes the birth and evolution of the universe. But where did the term come from? What does it actually mean?
Watch this video ad-free on Nebula:
https://nebula.tv/videos/scienceasylu…
May 3, 2024
Dynamic two-dimensional covalent organic frameworks
Posted by Dan Breeden in category: materials
Two-dimensional covalent organic frameworks (2D COFs) enable the construction of bespoke functional materials, but designing dynamic 2D COFs is challenging. Now it has been shown that perylene-diimide-based COFs can open and close their pores upon uptake or removal of guests, while fully retaining their crystalline long-range order. Moreover, the variable COF geometry enables stimuli-responsive optoelectronic properties.
May 3, 2024
Einstein Challenged: Exploring the “Cosmic Glitch” in Gravity
Posted by Dan Breeden in categories: physics, space
Moving one step closer to understanding mysteries at the edge of the universe.
A group of researchers at the University of Waterloo and the University of British Columbia have discovered a potential “cosmic glitch” in the universe’s gravity, explaining its strange behavior on a cosmic scale.
For the last 100 years, physicists have relied upon Albert Einstein’s theory of “general relativity” to explain how gravity works throughout the universe. General relativity, proven accurate by countless tests and observations, suggests that gravity impacts not simply three physical dimensions but also a fourth dimension: time.
May 3, 2024
Samsung to Introduce 3rd Generation Gate-All-Around 2nm Transistors in 2025
Posted by Dan Breeden in category: computing
The company is already the industry leader when it comes to gate-all-around transistors, but so far it’s yet to really make a dent in TSMC’s market share.
May 3, 2024
Probe3D: Study examines how well AI models understand the third dimension
Posted by Dan Kummer in category: robotics/AI
A new study examines whether and how well multimodal AI models understand the 3D structure of scenes and objects.
Researchers from the University of Michigan and Google Research investigated the 3D awareness of multimodal models. The goal was to understand how well the representations learned by these models capture the 3D structure of our world.
According to the team, 3D awareness can be measured by two key capabilities: Can the models reconstruct the visible 3D surface from a single image, i.e., infer depth and surface information? Are the representations consistent across multiple views of the same object or scene?
May 3, 2024
Malicious Android Backdoor Lets Hackers Steal Your Phone’s Content
Posted by Genevieve Klien in categories: cybercrime/malcode, mobile phones
May 3, 2024
China launches rocket to far side of the Moon
Posted by Eamon Everall in category: space
The mission, billed a world first, aims to bring around two kilograms of lunar samples back to Earth.
May 3, 2024
Longevity Escape Velocity: Nearing Immortality?
Posted by Chris Smedley in category: life extension
Achieving Longevity Escape Velocity is likely within the next 10–20 years—why is this happening, and what are the implications?