Despite linking to NASA's social media presences, I'd be very surprised if this had anything to do with NASA. The site appears to be hosted with an outfit called Big Brain in Reston, Virginia, and the owner's identity is concealed in the domain's whois record. Doesn't seem very NASA-like.
I'd say its more likely to be an attempt at a viral email address harvesting operation that's exploiting the current NASA shutdown. Nicely done though.