A new way to determine the age of stars?

24 March 2016 Astronomy Now

Researchers have developed a new conceptual framework for understanding how stars similar to our Sun evolve. Their framework helps explain how the rotation of stars, their emission of X-rays, and the intensity of their stellar winds vary with time. Their work could ultimately help to determine the age of stars more precisely than is currently possible.


Ageing stars don’t spin down exactly as expected

5 January 2016 Astronomy Now

New information about the way mature stars spin indicates that one recently developed method for determining a star’s age needs to be recalibrated for stars that are older than our Sun, as spin rate is one of the few windows into stellar ages. This has implications for our own solar system, as our own Sun might be on the cusp of a transition in its magnetic field.