home_pale_blue_dot

Dear Reid, These videos mean more to me than I can express in words. I had typed out a lengthy explanation, attempting to equate their meaning and my feelings of gratitude, but I could not find a way to translate my emotions. Suffice it to say, they changed my life. Thank you, from the bottom of my heart, for your passion, creativity, and work, and for your willingness to share Sagan's legacy with the world. Best, Home_Pale_Blue_Dot

What technological developments are essential to humans settling the solar system and how far off are we from achieving this goal?