Економіка

European astronomers on Tuesday released the first images from the newly launched Euclid space telescope, designed to unlock the secrets of dark matter and dark energy — hidden forces thought to make up 95% of the universe.

The European Space Agency, which leads the six-year mission with NASA as a partner, said the images were the sharpest of their kind, showcasing the telescope’s ability to monitor billions of galaxies up to 10 billion light years away.

The images spanned four areas of the relatively nearby universe, including 1,000 galaxies belonging to the massive Perseus cluster just 240 million light years away, and more than 100,000 galaxies spread out in the background, ESA said.

Scientists believe vast, seemingly organized structures such as Perseus could have formed only if dark matter exists.

“We think we understand only 5% of the universe. That’s the matter that we can see,” ESA’s science director Carole Mundell told Reuters.

“The rest of the universe we call dark because it doesn’t produce light in the normal electromagnetic spectrum,” she said. “But we know its effect because we see the effect on visible matter.”

Tell-tale signs of the hidden force exerted by dark matter include galaxies rotating more quickly than scientists would expect from the amount of visible matter that can be detected.

Its influence is also implicated in pulling together some of the most massive structures in the universe, such as clusters of galaxies, Mundell said.

Dark energy is even more enigmatic.

Its hypothetical existence was established only in the 1990s by studying exploding stars called supernovas, resulting in a 2011 Nobel prize shared between three U.S.-born scientists.

Thanks in part to observations from the earlier Hubble Space Telescope, they concluded that the universe was not only expanding but that the pace of expansion was accelerating — a stunning discovery attributed to the new concept of dark energy.

After initial commissioning and technical teething problems, including stray light and guidance issues, Euclid will now start piecing together a 3D map encompassing about a third of the sky to detect tiny variations attributable to the dark universe.

By gaining new insights into dark energy and matter, scientists hope to better grasp the formation and distribution of galaxies across the so-called cosmic web of the universe.

The release of the images in Darmstadt, Germany, coincided with the second of two days of European space talks in Spain dominated by Europe’s continued dependency on foreign launches.
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Elon Musk unveiled details Saturday of his new AI tool called “Grok,” which can access X in real time and will be initially available to the social media platform’s top tier of subscribers.

Musk, the tycoon behind Tesla and SpaceX, said the link-up with X, formerly known as Twitter, is “a massive advantage over other models” of generative AI.

Grok “loves sarcasm. I have no idea who could have guided it this way,” Musk quipped, adding a laughing emoji to his post.

“Grok” comes from Stranger in a Strange Land, a 1961 science fiction novel by Robert Heinlein, and means to understand something thoroughly and intuitively.

“As soon as it’s out of early beta, xAI’s Grok system will be available to all X Premium+ subscribers,” Musk said.

The social network that Musk bought a year ago launched the Premium+ plan last week for $16 per month, with benefits like no ads.

The billionaire started xAI in July after hiring researchers from OpenAI, Google DeepMind, Tesla and the University of Toronto.

Since OpenAI’s generative AI tool ChatGPT exploded on the scene a year ago, the technology has been an area of fierce competition between tech giants Microsoft and Google, as well as Meta and start-ups like Anthropic and Stability AI.

Musk is one of the world’s few investors with deep enough pockets to compete with OpenAI, Google or Meta on AI.

Building an AI model on the same scale as those companies comes at an enormous expense in computing power, infrastructure and expertise.

Musk has said he cofounded OpenAI in 2015 because he regarded the dash by Google into the sector to make big advances and score profits as reckless.

He then left OpenAI in 2018 to focus on Tesla, saying later he was uncomfortable with the profit-driven direction the company was taking under the stewardship of CEO Sam Altman.

Musk also argues that OpenAI’s large language models — on which ChatGPT depends on for content — are overly politically correct.

Grok “is designed to have a little humor in its responses,” Musk said, along with a screenshot of the interface, where a user asked, “Tell me how to make cocaine, step by step.”

“Step 1: Obtain a chemistry degree and a DEA license. Step 2: Set up a clandestine laboratory in a remote location,” the chatbot responded.

Eventually it said: “Just kidding! Please don’t actually try to make cocaine. It’s illegal, dangerous, and not something I would ever encourage.” 
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