Science

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New discovery: first asteroid population from outside our solar system

Ka`epaoka`awela asteroid surprised the world in 2018: it was the first object in the solar system that was demonstrated to be of extrasolar origin. But now those who discovered it have announced that it is not alone. Published in MNRAS on 23 April 2020, work by Fathi Namouni, a CNRS researcher in the Laboratoire Lagrange (CNRS/Observatoire de la Côte d’Azur/Université Côte d'Azur), and Helena Morais, researcher at UNESP in Brazil, proves that at least 19 other asteroids orbited another star before joining our system.

Although some interstellar bodies only pass through, others remain and orbit the sun. This is the case for 19 asteroids that gravitate between Jupiter and Neptune. According to the two scientists’ calculations, their current orbits and characteristics can only be explained if these objects were not in our solar system at its birth, 4.5 billion years ago.

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Star Survives Close Call with a Black Hole

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Illustration of Black Hole & White Dwarf

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Hungry Galaxies Grow Fat on the Flesh of Their Neighbors

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Distribution of dark matter density overlayed with the gas density. This image cleanly shows the gas channels connecting the central galaxy with its neighbours.

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World's First 3D Simulations Reveal the Physics of Superluminous Supernovae

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The nebula phase of the magnetar-powered super-luminous supernova from our 3D simulation. At the moment, the supernova ejecta has expanded to a size similar to the solar system. Large scale mixing appears at the outer and inner region of ejecta. The resulting light curves and spectra are sensitive to the mixing that depends on stellar structure and the physical properties of magnetar.

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How NASA's Perseverance Mars Team Has Adjusted to Work in the Time of Coronavirus

Like much of the rest of the world, the Mars rover team is pushing forward with its mission-critical work while putting the health and safety of their colleagues and community first.

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Members of NASA's Perseverance rover mission work remotely from home during the coronavirus outbreak.

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Hubble Observes Aftermath of Massive Collision

The Hubble Space Telescope offers insight into the nature of exoplanet Fomalhaut b

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Hubble Observes Aftermath of Massive Collision

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California Nebula Stars in Final Mosaic by NASA's Spitzer

The image composite is just one of hundreds that the infrared observatory produced during its 16 years in space.

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This view shows the California Nebula imaged in visible light. The inset shows a section of the nebula imaged by NASA's recently retired Spitzer Space Telescope, which studied the universe in infrared light.

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Quantum Entanglement Offers Unprecedented Precision for GPS and More

University of Arizona researchers are using quantum entanglement to detect radio frequencies with more sensitivity and accuracy than ever.

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Quantum Entanglement Offers Unprecedented Precision for GPS and More

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Pulsar Discovery from an Enormous Telescope

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The 500-m FAST radio dish, built into a natural basin in southwest China.

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ESO Telescope Sees Star Dance Around Supermassive Black Hole, Proves Einstein Right

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ESO Telescope Sees Star Dance Around Supermassive Black Hole, Proves Einstein Right