Due to the mind-blowing distances and speeds required, interstellar travel would be extraordinarily difficult, if not impossible, for humanity to achieve. But new research highlights yet another challenge: communication blackouts.
The next-closest star system to our own, Alpha Centauri, is over 4 light-years away, so barring any fancy sci-fi technological revolution in the next few centuries, if we want to spread among the stars, we'll have to do it the "slow" way.
