MSNBC The 11th Hour December 23, 2021 04:58:00
Donate now at redcross.org the last thing before we go tonight on christmas day, nasa expects to launch what some are calling a $10 billion time machine. let me explain. the james webb space telescope has been decades in the making. it's seen as the successor to the hubble. it has instruments sensitive enough it will be able to look back at 13 billion years of cosmic history. how is that possible? nbc news explains telescopes essentially function as time machines because it takes time for light to travel through space. the web observatory will be able to see farther in the universe than ever...