Dark Matter Signal, Euclid's Ancient Quasars & Asteroid Double Mission
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Dark Matter Signal, Euclid's Ancient Quasars & Asteroid Double Mission
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(00:01:28) FROSTI Upgrade Expands LIGO Range
(00:01:59) Euclid Finds Earliest Quasars
(00:02:56) Asteroid Missions Active Simultaneously
(00:03:29) Mars Carbon and Hidden Star Clusters
A landmark week for fundamental physics and deep-universe astronomy. LIGO has detected a gravitational wave from a subsolar-mass object — a mass range no known stellar or nuclear process can produce — and a peer-reviewed analysis in the Astrophysical Journal argues the best explanation is a primordial black hole formed in the first second after the Big Bang. If confirmed, this would be the strongest observational evidence yet that dark matter is partly composed of these ancient objects. Adding urgency: LIGO's new FROSTI thermal optics upgrade could expand detection range tenfold, meaning the hypothesis will face a clean observational test within the decade.
Meanwhile, ESA's Euclid space telescope has catalogued 31 ancient quasars at redshifts above 7.6, with Keck Observatory spectroscopy confirming 21 — establishing the first statistical population of supermassive black holes when the universe was under 700 million years old. Their sheer mass at that epoch strains standard growth models, and primordial black holes are among the leading proposed seeds.
On the solar system frontier, Japan's Hayabusa2 completed a close flyby of asteroid Torifune at just 800 metres, while China's Tianwen-2 has begun characterising asteroid Kamoʻoalewa ahead of sample collection, with an Earth return targeted for late 2027. Both missions are active simultaneously — a historic parallel in asteroid science.
Finally, NASA's Perseverance rover has found complex macromolecular carbon in Martian mudstone, and a JWST-radio survey has uncovered roughly 50 previously hidden young massive star clusters at galactic centres. Instruments are sharpening. The biggest questions in astronomy are converging on testable answers.
This episode includes AI-generated content.
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