Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Dubious claims that science is a purely social construction are not representative of all 'science studies'. But 'constructivism' should not be dismissed if science wishes to strengthen its role in society.
Many young stars are observed to emit fast-flowing jets of material. A new model of how they are generated confirms the suspicion that episodic jets are an unavoidable consequence of star formation.