Researchers created a groundbreaking solar panel system that could increase the total amount of clean energy solar panels can generate.
Solar energy is a promising energy source that is significantly cleaner than traditional dirty fuels. However, current solar panels often require high-temperature manufacturing processes that generate significant amounts of carbon. On top of that, traditional solar panels absorb only small portions of infrared and ultraviolet light, meaning chunks of sunlight don’t get converted into usable energy.
Researchers created a new solar panel system to address these challenges. In a recent study published in Nature, a team of scientists combined perovskite and organic solar cells, two emerging solar technologies, to create what they call a “tandem solar cell” that can absorb a wide spectrum of sunlight.
The vast distances between stars make interstellar travel one of humanity’s most daunting challenges. Even the Voyager spacecrafts, now in interstellar space, would take tens of thousands of years to reach the nearest star, Alpha Centauri. To put this into perspective, Alpha Centauri is 277,000 astronomical units (AU) away—over 7,000 times the distance from Earth to Pluto. At current spacecraft speeds, a journey to our stellar neighbor would take an unimaginable 70,000 years. However, new ideas like the Sunbeam Mission offer a promising path forward, proposing innovative propulsion techniques that could shorten this timeline to mere decades.
The Sunbeam Mission centers around relativistic electron beam propulsion, where high-energy electron beams, accelerated close to the speed of light, push a spacecraft forward. This approach eliminates the need for onboard fuel, reducing the spacecraft’s mass and enabling greater acceleration. A stationary satellite, or statite, positioned near the Sun, would generate these electron beams by converting solar energy into electricity. Using materials and technologies like those developed for NASA’s Parker Solar Probe and European Space Agency’s Solar Orbiter, the statite could endure the Sun’s intense heat while directing the beam over vast distances. This could propel a spacecraft to 10% of the speed of light, allowing it to reach Alpha Centauri in about 40 years.
While the concept is ambitious, its challenges—like generating and maintaining the beam, energy conversion, spacecraft navigation, material durability, and beam focus—are not insurmountable. Current technologies, such as the Large Hadron Collider, high-temperature solar converters, and advanced heat-resistant materials, provide a foundation for overcoming these hurdles. Innovations in adaptive optics and laser communication systems also offer insights into managing beam precision over interstellar distances, demonstrating how existing advancements could be adapted for this revolutionary mission.
The Sunbeam Mission represents an extraordinary opportunity to explore interstellar space within our lifetimes, blending ingenuity and existing technology to bring the dream of reaching another star closer to reality. By addressing these interconnected challenges, humanity could usher in a new era of exploration, paving the way for scientific discoveries that redefine our place in the universe.
Modern AI systems have fulfilled Turing’s vision of machines that learn and converse like humans, but challenges remain. A new paper highlights concerns about energy consumption and societal inequality while calling for more robust AI testing to ensure ethical and sustainable progress.
A perspective published on November 13 in Intelligent Computing, a Science Partner Journal, argues that modern artificial intelligence.
Artificial Intelligence (AI) is a branch of computer science focused on creating systems that can perform tasks typically requiring human intelligence. These tasks include understanding natural language, recognizing patterns, solving problems, and learning from experience. AI technologies use algorithms and massive amounts of data to train models that can make decisions, automate processes, and improve over time through machine learning. The applications of AI are diverse, impacting fields such as healthcare, finance, automotive, and entertainment, fundamentally changing the way we interact with technology.
The development of sustainable energy sources that can satisfy the world energy demand is one of the most challenging scientific problems. Nuclear fusion, the energy source of stars, is a clean and virtually unlimited energy source that appears as a promising candidate.
The most promising fusion reactor design is based on the tokamak concept, which uses magnetic fields to confine the plasma. Achieving high confinement is key to the development of nuclear fusion power plants and is the final aim of ITER, the largest tokamak in the world currently under construction in Cadarache (France).
The plasma edge stability in a tokamak plays a fundamental role in plasma confinement. In present-day tokamaks, edge instabilities, magnetohydrodynamic waves known as ELMs (edge localized modes), lead to significant particle and energy losses, like solar flares on the edge of the sun. The particle and energy losses due to ELMs can cause erosion and excessive heat fluxes onto the plasma-facing components, at levels unacceptable in future burning plasma devices.
Electron transport in bilayer graphene exhibits a pronounced dependence on edge states and a nonlocal transport mechanism, according to a study led by Professor Gil-Ho Lee and Ph.D. candidate Hyeon-Woo Jeong of POSTECH’s Department of Physics, in collaboration with Dr. Kenji Watanabe and Dr. Takashi Taniguchi at Japan’s National Institute for Materials Science (NIMS).
The findings are published in the journal Nano Letters.
Bilayer graphene, comprising two vertically stacked graphene layers, can exploit externally applied electric fields to modulate its electronic band gap—a property essential for electron transport. This distinctive feature has drawn considerable attention for its prospective role in “valleytronics,” an emerging paradigm for next-generation data processing.
So, if all goes to plan, the Eco Rocket could become Japan’s first operational spaceplane. On its website, Space Walker explains that “we envision sustainable commercial space transportation for all, as familiar and accessible as commercial air travel today.”
The company says it has patented the technology behind a world-first lightweight-composite cryogenic propellant tank. It also emphasizes the value of reusability, which has been shown in practice by SpaceX’s incredibly successful Falcon 9 program. Space Walker will go the extra mile for sustainability, though, as the Eco Rocket will use a carbon-neutral liquefied biomethane propellant.
Australia has made history with its very ambitious SunCable project, which promises to change the face of renewable energy around the globe. It entails the export of solar energy towards Singapore via a 4,300 km underwater cable, marking Australia’s transition to sustainable power from fossil fuels.
It is indeed very exciting development in renewable energy which is the SunCable project. At its heart is an intended most gigantic solar and battery park in the world, to be built near Tennant Creek in northern Australia, at an estimated cost of $35 billion.
This will supply green energy to Singapore, with the potential of contributing 6 GW towards 15% of its electricity needs, connected by the world’s longest underwater cable – a technological marvel six times the length of any existing cable.
Increasing module efficiency and expanding manufacturing capacity play complementary roles in reducing costs of metal halide perovskite/silicon tandem solar modules, according to researchers at the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL). Each cost lever can play a similar role depending on a manufacturer’s ability to scale up and improve module performance.
Most photovoltaic (PV) modules manufactured today are based on single-junction siliconsolar cells. By pairing silicon with another solar cell material such as metal halide perovskites (MHPs), thus creating a tandem, manufacturers can create a solar module that can convert more sunlight to electricity than using silicon alone.
This tandem technology is still in the early stages, and there are multiple options being pursued to integrate MHPs and silicon, with a lot of unknowns in terms of cost and performance. To address this gap, the researchers built a manufacturing cost model that combines laboratory processes with existing equipment and supply chains to compare different possible approaches at scale.
Drivers of the German automaker’s EVs will be able to plug in at any Tesla Supercharger in the United States starting in February. For now, only U.S. drivers will have access to charging stalls.
