Neutron stars are interesting... "At its equator it is spinning at approximately 24% of the speed of light, or over 70,000 km per second." https://en.wikipedi

Neutron stars are interesting... "At its equator it is spinning at approximately 24% of the speed of light, or over 70,000 km per second." https://en.wikipedia.org/wiki/PSR_J1748%E2%88%922446ad https://en.wikipedia.org/wiki/PSR_J1748%E2%88%922446ad Magnetars, even more so - and can have a measurable effect on the Earth's atmosphere: https://slate.com/technology/2012/12/cosmic-blast-magnetar-explosion-rocked-earth-on-december-27-2004.html https://slate.com/technology/2012/12/cosmic-blast-magnetar-e... https://en.wikipedia.org/wiki/SGR_1806%E2%88%9220 https://en.wikipedia.org/wiki/SGR_1806%E2%88%9220