Mark January 27th on your calendar.
Mach 30 is celebrating its 4th birthday and you’re invited! We will be gathering over Google Hangouts (On-Air) and Twitter. Learn more and RSVP over at Eventbrite (http://goo.gl/jvxK9). And don’t forget to tell your friends.
Be there at 2pm, EST! Cake, rockets, games and lots of good chatter about space.