Santa Claus and his reindeer will have some expert help this Christmas Eve, as they streak around the world to deliver joy and gifts to children everywhere. NASA flight controllers in Houston’s Mission Control Center will watch over Santa throughout the night, just as they watch over the International Space Station and its crew every day.

NASA’s Santa Tracker will be available beginning at 4 p.m. EST Dec. 24 on the Internet at:

Updates on Santa’s progress will be posted on NASA’s spaceflight website every two hours as Mission Control Houston monitors his rounds: