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stella day 2

Dark Energy Survey Data Reveals the Tighest Estimates Yet on Cosmic Expansion January 29, 2026
The Dark Energy Survey Collaboration collected information on hundreds of millions of galaxies across the Universe using the U.S. Department of Energy-fabricated Dark Energy Camera, mounted on the U.S. National Science Foundation Víctor M. Blanco 4-meter Telescope at CTIO, a Program of NSF NOIRLab. Their completed analysis combines all six years of data for the […]
Chile's Paranal Observatory Saved from Industrial Development January 28, 2026
After months of protests led by Nobel laureate Reinhard Genzel, the American energy company AES Andes has abandoned plans to build a massive solar and wind facility just kilometres from one of the world's premier telescope sites. The decision preserves the pristine night skies above Chile's Paranal Observatory, where the European Southern Observatory operates some […]
Solving the Century Old Puzzle of Our Galaxy's Neighborhood January 28, 2026
Nearly a century after Edwin Hubble discovered the universe's expansion, astronomers have finally explained the nagging mystery of why most nearby galaxies rush away from us as if the Milky Way's gravity doesn't exist? The answer lies in a vast, flat sheet of dark matter stretching tens of millions of light years around us, with […]
Mercury May Not Be "Dead" After All January 28, 2026
Researchers using machine learning have discovered hundreds of mysterious bright streaks on Mercury's surface that appear to be caused by gases escaping from the planet's interior. The finding suggests the Solar System's smallest planet isn't the static, geologically dead world we thought it was, Mercury might still be active today, continuously releasing material into space […]
Do Dwarf Galaxies Merge In The Milky Way's Halo? January 28, 2026
Our current understanding of the Cosmos shows that structures emerge hierarchically. First there are dark matter densities, then dwarf galaxies. Those dwarfs then merge to form more massive galaxies, which merge together into even larger galaxies. Evidence of dwarf galaxy mergers is difficult to obtain, but new research found some in the Milky Way's halo.