Related topics: earth · nasa · stars · magnetic field · solar system

Astronomers probe origin of Planet 9

Astronomers at the University of Sheffield have shown that 'Planet 9' – an unseen planet on the edge of our solar system – probably formed closer to home than previously thought.

Close encounters of the stellar kind

The movements of more than 300 000 stars surveyed by ESA's Gaia satellite reveal that rare close encounters with our sun might disturb the cloud of comets at the far reaches of our solar system, sending some towards Earth ...

NASA watches the Sun put a stop to its own eruption

On Sept. 30, 2014, multiple NASA observatories watched what appeared to be the beginnings of a solar eruption. A filament—a serpentine structure consisting of dense solar material and often associated with solar eruptions—rose ...

Two weeks in the life of a sunspot

On July 5, 2017, NASA's Solar Dynamics Observatory watched an active region—an area of intense and complex magnetic fields—rotate into view on the Sun. The satellite continued to track the region as it grew and eventually ...

New clue to solving the mystery of the Sun's hot atmosphere

The elemental composition of the Sun's hot atmosphere known as the 'corona' is strongly linked to the 11-year solar magnetic activity cycle, a team of scientists from UCL, George Mason University and Naval Research Laboratory ...

Musical sun reduces range of magnetic activity

A study of the sun using sound waves suggests that the layer in which the significant magnetic activity is located has grown thinner in recent years. Prof Yvonne Elsworth will present results at the National Astronomy Meeting ...

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