The cradles of baby stars have a wheel-and-spoke like shape, with streams of gas converging toward a dense central hub. Using 3D simulations, researchers from Kyushu University and Nagoya University found that when an external shockwave strikes a gas cloud with a pinched magnetic field, it reorganizes the cloud into radial filaments. These findings open a new window into the environments where massive stars and star clusters are born.

The Sun's internal 'biorhythm' – which plays a critical role in the space weather we experience on Earth – has mysteriously changed over the past 40 years, a new study suggests.

Listening to tiny sound waves inside our star's 'heart' led researchers to discover that it may be entering "a different mode of behaviour". They now need to explore what this means.

The research, published today in Monthly Notices of the Royal Astronomical Society, is of particular significance to space weather.

Tiny sound waves inside the Sun unmask evidence of systematic changes in the solar activity cycle over the last 40 years – with implications for predicting space weather.