HeyJaredMatthew Williams
- Indexed articles, last 90 days
- 64
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- Oct 1, 2026
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NASA's First Selection for a New Class of Mission: The PRIMA Far-Infrared Telescope (opens the original)
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On September 23rd, NASA announced its first selection in a new class of astrophysics missions called Probe Explorers. As part of its commitment to studying the history and evolution of the Universe, NASA's proposed PRobe far-Infrared Mission for Astrophysics (PRIMA) has advanced to the next phase of development. This mission and the new program will operate within the agency’s Explorers Program, the oldest continuous NASA program specializing in astrophysics and heliophysics missions. The new mi
NASA's Hubble Marks its 200,000th Orbit by Watching Lensed Supernova (opens the original)
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On Saturday, September 19th, the Hubble Space Telescope completed its 200,000th orbit of Earth, marking yet another milestone for this venerable observatory. In addition, Hubble has traveled more than 8 billion km (5 billion mi) and gathered more than 1.7 million observations of the Universe. And earlier this year, Hubble celebrated its thirty-sixth year of continuous service, exceeding the International Space Station by about nine years. The observation it took on the day of its 200,000th orbit
Measuring the Distance Between Quasar Pairs Just Got Easier (opens the original)
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To measure the expansion rate of the cosmos, astronomers rely on the relationship between distance and recessional velocity (redshift). This has been historically difficult when it comes to quasar pairs, galaxies with bright cores that are on the verge of colliding. Fortunately, researchers at the University of Alberta have devised a more precise method for measuring the distance between double quasars, helping reduce uncertainty when measuring cosmic expansion. Quasi-stellar objects (aka quasar
Perseverance Reveals How Complex Water Systems Shaped the Jezero Crater on Early Mars (opens the original)
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In Mars' Jezero Crater, a geologic area known as the “Margin Unit” stretches along the shoreline of a lake that filled the region billions of years ago. When the Perseverance rover reached there in September 2023, mission scientists expected to find sedimentary rocks that formed from sand deposits, which are good at preserving past microbial life. Instead, they were surprised to find olivine-rich igneous rock, which typically forms from underground magma or by volcanic activity on the surface. T
Researchers Develop a Way to Check the Weather on a Exoplanet (opens the original)
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Using data from the James Webb Space Telescope (JWST), an international team of researchers decoded the weather on a distant exoplanet. The target in question was SIMP J0136+09 (or SIMP 0136), a well-studied brown dwarf located about 20 light-years from Earth in the constellation Pisces. The method they used employs Principal Component Analysis (PCA), a statistical technique that simplifies complex data by keeping the variables that change together while discarding the rest. The results showed t
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