When Neil set up his "Ask an Astrophysicist" booth in Central Park, he got lots of takers. Here, listen in as he describes what inspired him as a boy to pursue science and why we should be thankful for the Hubble Space Telescope.

Neil has a channel on BigThink.com, where he shares some of his thoughts and ideas in short video clips.  Check it out.

Just how far back in time can we see? Hear what Neil had to say when he set up his "Ask an Astrophysicist" booth in Central Park.

How multi-dimensional is the cosmos? Hear what Neil had to say when he set up his "Ask an Astrophysicist" booth in Central Park.

What would the world be like without us? In this video, Neil takes you through a scenario. What do you wonder about? Add your "What If" scenarios here,and the producers of NOVA scienceNOW might have Neil act out the answers.

Cosmic Perspective from NOVA scienceNOW, August 4, 2009
(Originally broadcast on June 25, 2008)

NEIL deGRASSE TYSON: And now for some final thoughts from the "dark side."

Consider all we've learned about the size, age and contents of the universe, from its fiery birth in the Big Bang, through 14 billion years of cosmic expansion that has followed. Even better, consider the powerful laws of physics we've discovered that account for it all. Kind of makes you stand with pride for being human.