¡Joseph Alvarez Peña cumple 1 año hoy!
On the dictator’s 120th birthday, Sidney Rittenberg—whose life story entwines with the turbulent history of the People’s Republic—describes his interactions with the man who still dominates China 37 years after his death.
Read more. [Image: Sidney Rittenberg]
This animation illustrates how an old pulsar in a binary system can be reactivated — and sped up to a millisecond spin — by accreting gas from its companion star.