HD 21997 is a high-frequency Delta Scuti pulsator, observations find phys.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from phys.org Daily Mail and Mail on Sunday newspapers.
New studies reveal that older stars have weaker magnetic braking, suggesting that they might be prime locations for finding alien life. Once upon a cosmic time, scientists assumed that stars apply an eternal magnetic brake, causing an endless slowdown of their rotation. With new observations and