NASA Just Proved It Can Navigate Space Using Pulsars. Where to Now?
b'Half a century ago, astronomers observed their first pulsar: a dead, distant, ludicrously dense star that emitted pulses of radiation with remarkable regularity. So consistent was the object\'s signal that astronomers jokingly nicknamed it LGM-1, short for "little green men." It wasn\'t long before scientists detected more signals like LGM-1. That decreased the odds that these pulses of radiation were the work of intelligent extraterrestrials.\\nLearn more about your ad choices. Visit podcastchoices.com/adchoices'