(POR) O legado de um homem é construído pela sua mente e pela sua honra
Gjermundbu Helmet, considerada o único capacete viking real encontrado até hoje com mais de 1000 anos
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@themoderntrans Que bundão lindo e rebolado com força! 🔥 Essa cena ficou absurda de gostosa, o jeito que ela domina e balança é puro fogo. Conteúdo top demais!
A eleição não pode ser motivo para dividir o país, negar ajuda a quem precisa ou humilhar quem pensa diferente. O voto não pode estar acima da dignidade humana. Como cristãos, precisamos lembrar que o amor ao próximo não depende de ideologia política.
É POSSÍVEL FAZER A SEPARAÇÃO DO SUL DO BRASIL? Fábio Ostermann traz uma alternativa para alterarmos a Constituição de de uma nação Federativa, para Confederativa, assim abrindo espaço para plebiscitos e possibilidades de separação:
É possível? Acredito que não, pois barraria no STF.
Dark energy seems to hint that, perhaps, the expansion of the Universe isn’t always accelerating at the same rate. For 25 years, we considered dark energy a cosmological constant (Λ)—an unchanging force that uniformly accelerates the expansion of the Universe. New data from DESI (Dark Energy Spectroscopic Instrument) suggest that things might be more complicated. DESI has built a three-dimensional map of more than 47 million galaxies and quasars at distances up to 11 billion light-years. Using baryon acoustic oscillations (BAO)—a kind of “cosmic ruler”—scientists spotted a hint: the acceleration of expansion today is weaker than it was in the past. If this holds up, it will be one of the biggest shifts in cosmology since 1998. At what speed is the Universe expanding? There isn’t a single “speed.” There’s the Hubble constant (H₀)—roughly 67–73 km/s per megaparsec. This means: the farther the galaxy, the faster it recedes from us. At a distance of ~3.26 million light-years, the recession speed is already about 70 km/s, and it grows proportionally farther out. There’s a major issue—the Hubble tension. Measurements from nearby galaxies and supernovae give ~73 km/s/Mpc, while calculations from the cosmic microwave background of the early Universe give ~67 km/s/Mpc. The difference is small, but stubborn. In the 1920s, Lemaître and Hubble discovered that the farther the galaxy, the greater its redshift—the Universe is expanding. - 1998: Two independent teams (Perlmutter, Riess, Schmidt) studying Type Ia supernovae saw that distant supernovae are dimmer than they should be. That means expansion isn’t slowing down—it’s accelerating. They got the Nobel Prize for this in 2011. - Now DESI and other projects are refining whether the force behind this acceleration is constant. For now, it’s important to understand this isn’t a discovery, but a hint (a few sigma, not 5σ). Systematic errors in the data or interpretation are possible. Some cosmologists think the current evidence for evolving dark energy is still pretty weak, and the simple cosmological constant works great for now. Other explanations for why the Universe is expanding and accelerating: 1. Cosmological constant—vacuum energy, constant over time (the simplest version). 2. Dynamic dark energy (quintessence)—a scalar field that changes over time (this is what DESI is hinting at). 3. Modified gravity—on large scales, gravity works differently than general relativity predicts. 4. Inhomogeneous Universe—we live in a large “void,” creating the illusion of acceleration. 5. Perhaps it’s new physics related to the Hubble tension. For now, everything points to accelerated expansion. The question is whether the force of that acceleration is constant or changing. DESI has given a hint, but the final answer will come with new data (including from the Roman telescope and other missions). If this pans out, our picture of the Universe will get noticeably more complex—and more intriguing.
🚨 STRONGEST STORM ON THE PLANET: Satellite views of Super Typhoon Champi continue to impress as the storm churns in the Pacific. The category 5-equivalent storm peaked in strength with maximum sustained winds of 185 mph, tying Super Typhoon Sinlaku as the strongest storm on Earth in 2026 by wind speed.