Tag: sun

Experts say the sun is surrounded by a ‘bubble’ of solar wind

Some suspect the sun’s magnetic fields trail behind it like a cosmic tail – but, new research spanning an entire 11-year solar cycle suggests the structure may instead be more of a ‘bubble.’ Combining measurements from NASA’s Cassini mission, two Voyager spacecraft, and the Interstellar Boundary Explorer, researchers found […]

Mercury completes journey across Sun

Skywatchers across the globe have enjoyed an opportunity to see Mercury transit the Sun. Mercury’s sojourn between Earth and our star lasted from 11:12 until 18:42 GMT. It was the third such pass of 14 this century; Mercury will not make another transit until 2019 and then 2032. The event is […]