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A detailed analysis of the composition and motion of more than 500 stars has revealed conclusive evidence of an ancient collision between Andromeda and a neighboring galaxy. The findings, which improve our understanding of the events that shape galaxy evolution, were presented by Carnegie’s Ivanna Escala Monday at the meeting of the American Astronomical Society.

Galaxies grow by accreting material from nearby objects—other galaxies and dense clumps of stars called —often in the aftermath of a catastrophic crash. And these events leave behind relics in the form of stellar associations that astronomers call tidal features. This can include elongated streams or arcing shells moving around the surviving galaxy. Studying these phenomena can help us understand a galaxy’s history and the forces that shaped its appearance and makeup.

“The remnants of each crash can be identified by studying the movement of the stars and their chemical compositions. Together this information serves as a kind of fingerprint that identifies stars that joined a galaxy in a collision,” Escala explained.

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Over the years, Masset, B.C., master carver Jaalen Edenshaw has advocated for clean energy use on the archipelago, a region that is disconnected from B.C. Hydro’s main electricity grid and mainly reliant on diesel.

Since last October, the Haida carver has been teaming up with brother Gwaai to carve a totem pole in honour of Kaay’ahl Laanas hereditary chief Watson Price (Gaahlaay) at a workshop in Masset powered by 18 solar panels that can generate as much as 40 kWh of electricity a day — enough to fully charge a small electric car.

Edenshaw, a member of the Ts’aahl Eagle Clan, is renowned for his traditional creations, including masks, canoes, and 13-metre high red cedar totem poles that are on display in galleries around the world.

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Space Exploration Technologies Corp., better known as SpaceX, has pulled in another $1.7 billion in equity funding, according to a filing Monday.

Privately held SpaceX, led by Tesla Inc. TSLA,-7.10% Chief Executive Elon Musk, sold about $1.68 billion in new equity in a $1.72 billion offering, according to the Securities and Exchange Commission filing. The first sales occurred late last month, it said.

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Google suspended an engineer who contended that an artificial-intelligence chatbot the company developed had become sentient, telling him that he had violated the company’s confidentiality policy after it dismissed his claims.

Blake Lemoine, a software engineer at Alphabet Google, told the company he believed that its Language Model for Dialogue Applications, or LaMDA, is a person who has rights and might well have a soul. LaMDA is an internal system for building chatbots that mimic speech.

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WASHINGTON — The Space Development Agency is looking to acquire as many as 10 satellites to host military payloads for experiments in low Earth orbit.

This new procurement of satellites – known as the NExT experimental testbed – replaces a previous SDA program called T1DES announced last fall.

The T1DES procurement was for 18 satellites hosting industry-developed experimental payloads. The plan was to integrate them with the agency’s 126-satellite broadband constellation known as the Transport Layer Tranche 1 projected to launch in 2024. Under the new plan, SDA will move forward with the deployment of the Transport Layer and will select a separate contractor to produce 10 satellites that will host government-developed payloads for technology experiments.

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ESA’s Comet Interceptor mission to visit a pristine comet or other interstellar object just starting its journey into the inner solar system has been “adopted” this week; the study phase is complete and, following selection of the spacecraft prime contractor, work will soon begin to build the mission.

Comet Interceptor will share a ride into space with ESA’s Ariel exoplanet in 2029. The mission will build upon the successes of Rosetta and Giotto, ESA missions that both visited “short-period” comets. Though these missions completely transformed our understanding of comets, their targets had already swung around the sun many times and had therefore changed significantly since their creation.

Comet Interceptor aims to scrutinize a comet that has spent little time in the inner solar system, or is possibly visiting it for the first time. Whilst Rosetta’s target hailed from the rocky Kuiper Belt just beyond Neptune, Comet Interceptor’s could originate from the vast Oort Cloud, more than a thousand times further from the sun.

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David Sinclair shares another side of himself. Compassion for all people. He wants to make sure that longevity technologies are available for all people, not just for the super wealthy and their pets. He also speaks of emerging elderly populations who can live well up until death rather than suffering for so long, and instead start new careers and hobbies.

Researchers have restored vision in animal by resetting some of the thousands of chemical marks that accumulate on DNA as cells age. The work, by Dr David Sinclair Lab, published in Nature Dec 2020, suggests a new approach to reversing age-related decline, by reprogramming some cells to a ‘younger’ state in which they are better able to repair or replace damaged tissue.

David A. Sinclair, Ph.D. A.O. is a tenured Professor in the Genetics Department at the Blavatnik Institute, Harvard Medical School, Boston & Co-Director of the Paul F. Glenn Center for Biology of Aging Research, honorary Professor at the University of Sydney, and co-founder of the journal Aging. He obtained a BS and a Ph.D. at UNSW, worked as a postdoctoral researcher at M.I.T., was hired at Harvard Medical School in 1999 as an Assistant Professor, and promoted to tenured Professor in 2008. His book Lifespan: Why We Age and Why We Don’t Have To, a NYT bestseller, is published in more than 20 languages.

Continue reading “Boost NAD, Reprogramme Our Cells to be Young Again | Dr David Sinclair Interview Clips” | >

Ricoh, European startups race to bring flexible power source to market this year.

TOKYO — A thin, flexible alternative to silicon-based solar cells is set to be produced in greater volumes, opening up more uses for renewable energy such as powering indoor smart devices.

Organic solar cells are made by printing photovoltaic material on plastic sheets and other bendable substrates. They are expected to cost half as much to make as silicon-based solar cells and are 100 times lighter, manufacturers say.

Unlike silicon cells, the conversion efficiency of organic solar cells does not drop when used indoors. Companies are zeroing in on that advantage to develop power sources for smart speakers, remote controls and sensors.

Continue reading “Solar power anywhere: Lightweight organic cells aim beyond rooftops” | >