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Physicists find clue to formation of magnetic fields around stars and galaxies

An enduring astronomical mystery is how stars and galaxies acquire their magnetic fields. Physicists now have found a clue to the answer in the collective behavior of small magnetic disturbances. They report that small magnetic perturbations can combine to form large-scale magnetic fields just like those found throughout the universe.

Nov 9th, 2015

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Disk gaps don't always signal planets

When astronomers study protoplanetary disks of gas and dust that surround young stars, they sometimes spot a dark gap like the Cassini division in Saturn's rings. It has been suggested that any gap must be caused by an unseen planet that formed in the disk and carved out material from its surroundings. However, new research shows that a gap could be a sort of cosmic illusion and not the sign of a hidden planet after all.

Nov 2nd, 2015

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Spirals in dust around young stars may betray presence of massive planets

A team of astronomers is proposing that huge spiral patterns seen around some newborn stars, merely a few million years old, may be evidence for the presence of giant unseen planets. This idea not only opens the door to a new method of planet detection, but also could offer a look into the early formative years of planet birth.

Oct 30th, 2015

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Preparing for extreme space weather

A newly published National Space Weather Strategy identifies high-level priorities and goals for the nation, while an accompanying Action Plan outlines how federal agencies will implement the strategy.

Oct 29th, 2015

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VISTA discovers new component of Milky Way

The Vista Variables in the Via Lactea Survey (VVV) ESO public survey is using the VISTA telescope at the Paranal Observatory to take multiple images at different times of the central parts of the galaxy at infrared wavelengths. It is discovering huge numbers of new objects, including variable stars, clusters and exploding stars.

Oct 28th, 2015

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Scaling the universe

Some of the most intractable scientific problems involve natural and physical processes that span many scales and disciplines, from atoms to organs, and from quarks to galaxies. Developing coherent theories that can describe these fundamental phenomena will be crucial to understanding the origins of the Universe and life on Earth. Researchers are inventing solutions to link the vast with the tiny.

Oct 23rd, 2015

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Milky Way photo with 46 billion pixels

Astronomers compile the largest astronomical image of all time. In order to view it, researchers have provided an online tool. The image contains data gathered in astronomical observations over a period of five years.

Oct 21st, 2015

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