It's National Hispanic Heritage Month and we are sharing a powerful story about perseverance from NASA astronaut José Hernandez. Hernandez was a migrant worker as a child, and dreamed of one day going to space. His life story is portrayed in the movie, "A Million Miles Away," streaming on Prime Video. For our series "Note to Self," Hernandez shares a letter with his younger self about his journey to the stars and beyond. #josehernandez #nasa #astronaut Each weekday morning, "CBS Mornings” co-hosts Gayle King, Tony Dokoupil and Nate Burleson bring you the latest breaking news, smart conversation and in-depth feature reporting. "CBS Mornings" airs weekdays at 7 a.m. on CBS and stream it at 8 a.m. ET on the CBS News app. Subscribe to “CBS Mornings” on YouTube: youtube.com/CBSMornings Watch CBS News: cbsn.ws/1PlLpZ7c Download the CBS News app: cbsn.ws/1Xb1WC8 Follow "CBS Mornings" on Instagram: bit.ly/3A13OqA Like "CBS Mornings" on Facebook: b...