nasa recently announced that they were able to use the hubble and gaia space telescope to collect incredible [ cheers and applause ] >> hi. hi. [ cheers and applause ] hi. hey, hey, guys. hi, it's so exciting to be there. >> seth: hey. milky way, it's so great to have you and thanks for being a great home galaxy for our planet. >> oh, my gosh. you're so welcome. i love you guys. >> seth: mm-hmm. [ light laughter ] >> honestly, there's a lot of space that it's just so boring, but i think you guys are so cool. >> seth: well, thank you. so, you just spent some time being observed by nasa. >> oh, yeah. i love those guys. they're so smart. [ laughter ] oh, and the fact that they were even paying attention to me is just so cool. you know? 'cause they're so interesting. it's so great. >> seth: yeah. [ light laughter ] and according to a new post on nasa's blog, you're pretty interesting, too. for instance, we now know that you contain about 200 billion stars and roughly 87% of your composition is dark matter, a mysterious substance that we still don't know much about. >> well, a guy's got to have h