Lifeboat Foundation

GooKingSword/Pixabay.

Pretty interesting, right? But it could be possible one day with 3D printing technology.

Funny name, and serious astronomy.

Its discoverers say the new super-Earth could be second only to the TRAPPIST-1 planets as a potentially habitable alien world.

An ultracompact circularly polarized light source is a crucial component for the applications of classical and quantum optics information processing. The development of this field relies on the advances of two fields: quantum materials and chiral optical cavities. Conventional approaches for circularly polarized photoluminescence suffer from incoherent broadband emission, limited DOP, and large radiating angles. Their practical applications are constrained by low efficiency and energy waste to undesired handedness and emission directions. The chiral microlasers can have large DOPs and directional output, but only in specific power ranges. Most importantly, their subthreshold performances plummet significantly. Up to now, the strategy for simultaneous control of chiral spontaneous emission and chiral lasing is still absent.

In a new paper published in Science, researchers from Harbin Institute of Technology and Australian National University employ the physics of chiral quasi bound states in the continuum (BICs) and demonstrate the efficient and controllable emission of circularly polarized light from resonant metasurfaces.

BICs with integer topological charge in momentum space and a theoretically infinite Q factor have been explored for many applications including nonlinear optics and lasing. By introducing in-plane asymmetry, BICs turn to be quasi-BICs with finite but still high Q factors. Interestingly, the integer topological charge of BICs mode would split into two half integer charges, which symmetrically distribute in momentum space and correspond to left-and right-handed circular polarization states, also known as C points.

New artificial intelligence and space radar technology has uncovered scores of vessels hiding outside North Korea’s largest port, laying bare the sheer number of ships looking to cover their tracks in unprecedented detail.

The finding comes courtesy of Global Fishing Watch’s (GFW) synthetic aperture radar (SAR) data, which reveals hundreds of vessels, many of them cargo ships, outside of Nampho in recent weeks despite not broadcasting over traditional maritime channels.

While vessels entering North Korean waters often switch off their automatic identification system (AIS) transponders to avoid detection by sanctions monitors, open-source satellite.

Based on the live fire Map from nasa south America has too many fires to count probably estimating in the millions of acres burned circa 2022.

The Amazon rainforest is shrinking. The fires in the Amazon are growing.

Continue reading “Amazon rainforest fires 2022: Facts, causes, and climate impacts” »

Strange planets nicknamed BEASTies are unlikely to have formed around their current stars. They may have been stolen from other stars or captured from deep space.

Gargantuan young stars blast this region with ultraviolet radiation, and that may play a key role in how solar systems eventually form.

Y Combinator’s latest cohort of founders have opinions on the future of fintech. One-fifth of the accelerator’s Summer 2022 batch, which spans 240 companies, is working on solving issues in the financial space. The pitches range from building the Square for micro-merchants in Latin America to creating a way to angel invest in your favorite athlete.

And while the pitches are diverse, some concentrations show key ways that a group of vetted entrepreneurs are thinking about the landscape’s shift in light of finicky venture markets, a downturn, and some public market meltdowns. The most popular problem area among this batch’s fintech cohort has to do with payments, which is unsurprising. The story really begins with which focus made second place: neobanks.

Scientists have detected a sunspot that’s so huge it’s changing the way our sun vibrates.

Sunspots appear as dark blotches on the sun’s surface because they are cooler than the surrounding areas. They form where magnetic fields are particularly strong, driven by the electrically charged gases that constantly swirl inside our nearest star.

Sometimes these magnetic fields can be so intense that they prevent some heat from reaching the surface, forming a sunspot.