Sistema Solar

Cosmic noon’s time capsule: how an interstellar intruder is rewriting planetary history

A pristine 12-billion-year-old time capsule from deep space is turning our understanding of the universe upside down. Discovered passing through our inner solar system, the interstellar intruder Comet 3I/ATLAS carries an extreme chemical footprint—including a massive spike in deuterium and a deficit of carbon-13—proving it was forged during the universe's "Cosmic Noon" and long before our own Sun existed.

Nuevos

Un chorro oculto revela un agujero negro de masa intermedia

AT2019ijn comenzó como un destello azul rápido, pero años después reveló una potente emisión de radio. El fenómeno podría ser la señal de una estrella destruida por un agujero negro de masa intermedia y de un chorro relativista oculto visto fuera de eje.

Chandra releases ‘red, white, and blue’ universe for US 250th

To mark the 250th anniversary of the United States, NASA has released four stunning space images from its Chandra X-ray Observatory, presented in red, white, and blue to showcase the extraordinary phenomena of the universe explored by the agency. Alongside these visuals, NASA also introduced three new sonifications, a method that converts astronomical information into sound.

Cosmología

Exploración Espacial

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Radioastronomía

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    El SETI Institute confirma que el cometa interestelar 3I/Atlas no porta tecnología alienígena

    El SETI Institute rastreó cerca de 74 millones de señales de radio provenientes del cometa interestelar 3I/Atlas y no encontró ninguna tecno-firma. El objeto, estimado entre 440 m y 5.6 km y posiblemente de 11 mil millones de años, es completamente natural.

    Física

    James Webb muestra el polvo de Centaurus A y expone una galaxia que digiere una colisión de hace 2000 millones de años

    Los instrumentos infrarrojos del Webb han atravesado las bandas de polvo de Centaurus A, exponiendo millones de estrellas individuales, una enigmática estructura en forma de S y un agujero negro supermasivo que moldea el destino de la galaxia dos mil millones de años después de una fusión catastrófica.

    Webb pierces the dust veil of Centaurus A and reveals a galaxy still reeling from an ancient collision

    Webb's infrared instruments have sliced through the dust lanes of Centaurus A, exposing millions of individual stars, an enigmatic S-shaped structure, and a supermassive black hole shaping the galaxy's fate two billion years after a catastrophic merger.

    Euclid discovers the most ancient quasars in the universe, rewriting early cosmic history

    ESA's Euclid telescope has found 31 ancient quasars, including two record-breakers at redshift 7.77 and 7.69, seen when the universe was just 670 million years old. The discovery more than doubles the known population of quasars from the cosmic dawn.

    A massive galaxy caught dying in the most extreme protocluster known

    JWST and ALMA observations reveal galaxy C26 being violently stripped of its cold gas by ram pressure in protocluster SPT2349-56 at redshift 4.3, the most extreme such event ever detected in the early universe.

    Dynamic black holes may follow thermodynamic laws after all, Penn State physicists propose

    A Penn State team led by Abhay Ashtekar extends the laws of black hole mechanics to dynamic, out-of-equilibrium black holes by replacing event horizons with dynamical horizons, redefining how entropy is measured in the most extreme objects in the universe.

    Aprenda astronomía

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    Eventos

    Una actividad para grandes y chicos. Ven a observar el cosmos como nunca antes en el mejor sitio de observación de Costa Rica

    Marte

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