Why we need to ditch dark matter for a new theory of gravity

We can model the motions of planets in the Solar System quite accurately using Newton’s laws of physics. But in the early 1970s, scientists noticed that this didn’t work for disc galaxies – stars at their outer edges, far from the gravitational force of all the matter at their center – were moving much faster than Newton’s theory predicted. This made physicists propose that an invisible substance called “dark matter” was providing extra gravitational pull, causing the stars to speed up – a theory that’s become hugely popular. However, in a recent review, my colleagues and I suggest that observations…

This story continues at The Next Web

from The Next Web https://ift.tt/0QMjmst

Comments

TNW Podcast: Boris comes over to co-host; Slack’s Cal Henderson talks European tech

Welcome to the new episode of the TNW Podcast — the show where we discuss the latest developments in the European technology ecosystem and feature interviews with some of the most interesting people in the industry. In today’s episode, Andrii is joined by Boris Veldhuijzen van Zanten, co-founder, member of the board, and former CEO of TNW. The topics discussed include the jobs created by Dutch startups, giant state funding for energy projects, translations of the word ‘computer’, and a bunch of other things in between. In the interview section, we’re featuring a conversation with Cal Henderson, co-founder and… This story continues at The Next Web from The Next Web https://ift.tt/jUgcNFD

Enter ClimateGPT — the ‘first-ever’ AI model dedicated to fighting climate change

Fledgling AI startup EQTY Lab has unveiled the “first-ever” AI chatbot designed to provide accurate and authenticated climate data. AI tools such as ChatGPT and Google’s Bard have faced concerns over the accuracy of the information they provide, as they are trained on data scraped from the internet, but do not necessarily provide rigorous fact-checking. But EQTY Lab claims its open-source ClimateGPT service would provide “trust and transparency” as it draws on scientific data using a robust model that authenticates, secures, and governs the information provided. The model is integrated with Hedera, a public blockchain, which ensures the “highest standards… This story continues at The Next Web from The Next Web https://ift.tt/Pn2Nib1

Macron convinces UK nuclear startup to build its first factory in France

London-based nuclear energy startup Newcleo has scrapped plans to build its first power plant in Britain, opting to invest in France instead. The move follows extensive lobbying by France’s president Emmanuel Macron, who has personally met with Newcleo’s chief executive and founder Stefano Buono several times, to convince him to build the company’s first modular nuclear reactor in France, the Telegraph reports. Founded in 2021, Newcleo develops small nuclear reactors powered by radioactive waste. The company initially sought to tap the UK’s vast stockpile of nuclear waste at the former Sellafield site to power its reactors. But after two years… This story continues at The Next Web from The Next Web https://ift.tt/m9LkMaS

Technology News Era

Search This Blog