This was the last flight of SpaceX's V2 Starship design. Version 3 arrives next year. SpaceX closed a troubled but instructive chapter in its Starship rocket program Monday with a near-perfect test flight that carried the stainless steel spacecraft halfway around the world from South Texas to the Indian Ocean. The rocket's 33 methane-fueled Raptor engines roared to life at 6:23 pm CDT (7:23 pm EDT; 23:23 UTC), throttling up to generate some 16.7 million pounds of thrust, by a large measure more powerful than any rocket before Starship. Moments later, the 404-foot-tall (123-meter) rocket began a vertical climb away from SpaceX's test site in Starbase, Texas, near the US-Mexico border.

High-quality pretraining data is the fossil fuel of large language models (LLMs), yet its reserves are running low for frontier models. In this paper, we introduce RePro, a novel web recycling method that trains a relatively small LM with reinforcement learning to generate effective and faithful rephrasings of pretraining data. Specifically, we design one quality reward and three faithfulness rewards, optimizing the LM rephraser to convert organic data into high-quality rephrasings while maintaining its core semantics and structure. In our experiment, we train a 4B rephraser to recycle 72B tokens sampled from DCLM-RefinedWeb. Pretraining results on 400M and 1.4B models demonstrate that RePro delivers 4.7%-14.0% relative accuracy gains over organic-only baseline on 22 downstream tasks. RePro also outperforms ReWire, the state-of-the-art web recycling method that prompts a 70B rephraser, as well as the organic baseline with a 4x larger data pool. Experiments with different amounts of recycled data highlight that RePro improves organic data efficiency by 2-3x. Individual and distributional analyses validate that RePro preserves more critical information and faithfully reflects the characteristics of organic data compared to prompting-based methods. Together, these results show that RePro provides an efficient and controllable path to effectively harness the fossil fuel of LLM pretraining. We open-source our code, rephraser, and recycled data at https://github.com/cxcscmu/RePro.

Amino acids may not have arrived on big space rocks after all. Breakthroughs, discoveries, and DIY tips sent every weekday. The scientific community is largely divided into two camps regarding the origins of life on Earth. On one side, the idea that life spontaneously stemmed from the planet's primordial soup of amino acids and organic molecules . On the other side, life arrived after hitching a ride on interstellar debris .

Can Ukraine restore its pre-war borders? Why are Tomahawk missiles for Ukraine a'red line' for Russia? Is Russia testing NATO with aerial incursions in Europe? Lithuania, a small Baltic state bordering Belarus and Russia's Kaliningrad, is adapting to new tensions between NATO and Moscow. A member of the Lithuanian Riflemen's Union takes part in a military exercise in central Lithuania [Nils Adler/Al Jazeera] Two members of the Lithuanian Riflemen's Union take part in a military exercise in central Lithuania [Nils Adler/Al Jazeera] On a nearby building is an illuminated decorative Z, a symbol used to show support for the Russian military's full-scale invasion of Ukraine, which began in February 2022.

How Joseph Pilates went from circus performer to exercise expert. Pilates is one of the fastest growing exercises in America, but it all started in an unlikely place. Breakthroughs, discoveries, and DIY tips sent every weekday. Pilates is having a moment. According to a recent report from the Sports and Fitness Industry Association, Pilates participation has shot up from 9.2 million participants to 12.9 million since 2019, a jump of nearly 40% and the largest of any workout type across the United States.

I asked AI to plan my dream summer holiday. Here's how it turned out The gothic arches of Santa María de la Asunción crown the hill above the stone harbour where fishermen land their catches of sardines and anchovies. The church in Castro Urdiales, a small seaside town of about 30,000 people in northern Spain, is more than 700 years old. It was the perfect holiday destination for Alan Smith and his family, though he had never heard of it - until he asked ChatGPT. This week a report from the travel association ABTA found an increasing number of people were turning to AI to help with their holidays, from suggesting destinations to planning itineraries once there.

'Four dead and 12 injured' in Mississippi shooting after people descend on town for homecoming game Joe Biden, 82, receiving new treatment after'aggressive' cancer spread to his bones REVEALED: The secret George Soros network'behind America's street chaos'... and the dossier that shows how to stop it Tinnitus destroyed Peter's life but doctors dismissed him. Then he tried an extraordinary drug-free University of Cambridge-backed treatment that gives instant relief - no wonder medics say it's so'exciting' KENNEDY: Obama's bitter post about Trump's Gaza peace deal proves what I've long suspected about Barry... and it would make Sigmund Freud blush Gold is soaring... here's what the pros say you should do with your 401(k) before it's too late Model dubbed'the world's most beautiful girl' when she was six is now all grown up and looks VERY different as she poses up a storm at Paris Fashion Week Teacher was'so high on cocaine she thought one of her students was her dog' But now, a royal insider claims they're'just as entitled as their parents' with'shady friends' Heartbreaking moment NFL reporter makes brutal comment about player Xavier Legette's dead father in locker room interview Experts reveal the surprising TRUTH behind RFK Jr's link between circumcision and autism Bombshell records that damn Letitia James and show Trump was RIGHT... and the staggering sum she was swindling Trump starts DOGE 2.0 as mass layoffs take place across federal government amid shutdown Famed'Big Short' investor gives terrifying verdict on Trump hammering China with 100 PERCENT tariff... and issues doomsday warning to Wall Street Jennifer Aniston, you've betrayed every woman with your selfish admission about not having children: CAROLINE BULLOCK Nasa has unveiled plans to send astronauts to live on the moon - inside glass bubbles made from lunar dust. The American space agency is funding research into the large livable spheres which would be created in situ, the Telegraph reports. Tiny pieces of so-called lunar glass - a component of the moon's soil, or regolith, along with rocks and mineral fragments - would be collected upon arrival from Earth. The material would be melted down using the same technology as in a domestic microwave oven, along with a'smart microwave furnace'.

'Four dead and 12 injured' in Mississippi shooting after people descend on town for homecoming game Joe Biden, 82, receiving new treatment after'aggressive' cancer spread to his bones REVEALED: The secret George Soros network'behind America's street chaos'... and the dossier that shows how to stop it Tinnitus destroyed Peter's life but doctors dismissed him. Then he tried an extraordinary drug-free University of Cambridge-backed treatment that gives instant relief - no wonder medics say it's so'exciting' KENNEDY: Obama's bitter post about Trump's Gaza peace deal proves what I've long suspected about Barry... and it would make Sigmund Freud blush Gold is soaring... here's what the pros say you should do with your 401(k) before it's too late Model dubbed'the world's most beautiful girl' when she was six is now all grown up and looks VERY different as she poses up a storm at Paris Fashion Week Teacher was'so high on cocaine she thought one of her students was her dog' But now, a royal insider claims they're'just as entitled as their parents' with'shady friends' Heartbreaking moment NFL reporter makes brutal comment about player Xavier Legette's dead father in locker room interview Experts reveal the surprising TRUTH behind RFK Jr's link between circumcision and autism Bombshell records that damn Letitia James and show Trump was RIGHT... and the staggering sum she was swindling Trump starts DOGE 2.0 as mass layoffs take place across federal government amid shutdown Famed'Big Short' investor gives terrifying verdict on Trump hammering China with 100 PERCENT tariff... and issues doomsday warning to Wall Street Jennifer Aniston, you've betrayed every woman with your selfish admission about not having children: CAROLINE BULLOCK Meteorologist's stark warning to Americans to brace for a harsh winter with less snow but more nor'easters Meteorologists are already predicting what the winter months will bring, with some regions of the US expected to see less snow than last year, and nor'easters anticipated to ravage parts of the Northeast. Paul Pastelok, chief meteorologist for AccuWeather's long-range forecasting team, told the Daily Mail that while he didn't expect above normal snowfall for the winter season, he warned that those in the Northeast should brace for nor'easters and it would still be a harsh winter. Pastelok explained that the nor'easter over this weekend is on trend with what is to come, as rapidly developing storms come in off the East Coast. 'People may say, Well, you're forecasting less snow, so it doesn't look like a harsh winter.

'Four dead and 12 injured' in Mississippi shooting after people descend on town for homecoming game Joe Biden, 82, receiving new treatment after'aggressive' cancer spread to his bones REVEALED: The secret George Soros network'behind America's street chaos'... and the dossier that shows how to stop it Tinnitus destroyed Peter's life but doctors dismissed him. Then he tried an extraordinary drug-free University of Cambridge-backed treatment that gives instant relief - no wonder medics say it's so'exciting' KENNEDY: Obama's bitter post about Trump's Gaza peace deal proves what I've long suspected about Barry... and it would make Sigmund Freud blush Gold is soaring... here's what the pros say you should do with your 401(k) before it's too late Model dubbed'the world's most beautiful girl' when she was six is now all grown up and looks VERY different as she poses up a storm at Paris Fashion Week Teacher was'so high on cocaine she thought one of her students was her dog' But now, a royal insider claims they're'just as entitled as their parents' with'shady friends' Heartbreaking moment NFL reporter makes brutal comment about player Xavier Legette's dead father in locker room interview Experts reveal the surprising TRUTH behind RFK Jr's link between circumcision and autism Bombshell records that damn Letitia James and show Trump was RIGHT... and the staggering sum she was swindling Trump starts DOGE 2.0 as mass layoffs take place across federal government amid shutdown Famed'Big Short' investor gives terrifying verdict on Trump hammering China with 100 PERCENT tariff... and issues doomsday warning to Wall Street Jennifer Aniston, you've betrayed every woman with your selfish admission about not having children: CAROLINE BULLOCK I discovered secret tunnels below Egypt's Giza pyramids... and they may lead to a forgotten underworld On the northeastern edge of the Giza Plateau, I discovered three perfectly cut shafts hidden beneath the sands. They sit in the triangle between the Great Sphinx, Khufu's Pyramid and Khafre's Pyramid, and may open into a long-forgotten underground world. These are not water wells. They bear no inscriptions, no signs of casual digging, and their geometry is too precise, their walls too smooth, their design too deliberate.

NYC mayoral nominee Zohran Mamdani reveals Colbert show pitched shock'game' about war in Gaza Trump starts DOGE 2.0 as mass layoffs take place across federal government amid shutdown Fox Sports implodes over'protected' Mark Sanchez amid sick new stabbing video Famed'Big Short' investor gives terrifying verdict on Trump hammering China with 100 PERCENT tariff... and issues doomsday warning to Wall Street In his own words, KEITH URBAN speaks out on'miserable' life on the road: 'Where do we start?' A 10-year-old girl lied about bullies chopping her hair off. Delusions turned to dust: This week exposed Meghan... the thunderous look Harry gave her tells me he knows it too, writes MAUREEN CALLAHAN Erika Kirk's Turning Point USA scrambling behind the scenes after Candace Owens' leaked texts Taking Mounjaro has had a terrible side-effect I never saw coming. And I can't tell anyone because they'll think I'm a disgusting person Pierce Brosnan's wife Keely, 62, reveals thinner-than-ever frame after incredible weight loss journey Giants rookie Cam Skattebo's girlfriend goes viral in custom team jacket after he erupts in Eagles upset Ryan Reynolds slammed over'disturbing' vasectomy comment about son with Blake Lively Is your ex SPYING on you through your home? READ MORE: Are you dating a psychopath?