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March of the moons: Hubble captures rare triple-moon conjunction

March of the moons: Hubble captures rare triple-moon conjunction

Firing off a string of action snapshots like a sports photographer at a NASCAR race, NASA’s Hubble Space Telescope captured the rare occurrence of three of Jupiter’s largest moons racing across the banded face of the gas-giant planet: Europa, Callisto, and Io. These so-called Galilean satellites, named after the 17th ...

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Earth-Like Planets Around Most Stars?

hundreds of billions of Earth-like planets in our galaxy

Planetary scientists have calculated that there are hundreds of billions of Earth-like planets in our galaxy which might support life. The new research, led by PhD student Tim Bovaird and Associate Professor Charley Lineweaver from The Australian National University (ANU), made the finding by applying a 200-year-old idea to the ...

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Three nearly Earth-size planets found orbiting nearby star: One in ‘Goldilocks’ zone

This artistic impression shows NASA's planet-hunting Kepler spacecraft operating in a new mission profile called K2. Credit: NASA Ames/JPL-Caltech/T Pyle

A multinational, multi-institution team of researchers led by University of Arizona scientist Ian Crossfield has found a star with three planets, one of which may have temperatures moderate enough for liquid water — and maybe even life — to exist. NASA’s Kepler Space Telescope, despite being hobbled by the loss ...

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NASA’s Swift mission observes mega flares from nearby red dwarf star

NASA's Swift mission observes mega flares from nearby red dwarf star

On April 23, NASA’s Swift satellite detected the strongest, hottest, and longest-lasting sequence of stellar flares ever seen from a nearby red dwarf star. The initial blast from this record-setting series of explosions was as much as 10,000 times more powerful than the largest solar flare ever recorded. “We used ...

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Infant solar system shows signs of windy weather

This is an artist's rendition of AS 205 N, a T Tauri star that is part of a multiple star system. Credit: P. Marenfeld & NOAO/AURA/NSF

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have observed what may be the first-ever signs of windy weather around a T Tauri star, an infant analog of our own Sun. This may help explain why some T Tauri stars have disks that glow weirdly in infrared light while others ...

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