Neil Armstrong dead at 82: Celebrity reactions

Slideshow posted in Photos | Saturday, August 25, 2012

9 of 19: Melissa Joan Hart Tweeted, 'RIP Neil Armstrong! We have lost a true hero and pioneer! Thank you for being an example of brains and bravery!'

(Melissa Joan Hart appears in a 2011 promotional photo for 'Melissa and Joey.') (ABC Family / Hartbreak Films)