Congratulations are in order for Rachel Riley and Pasha Kovalev, who have welcomed their second child together.The Countdown presenter took to Instagram to share the exciting news of her new arrival alongside a snap off herself and husband Pasha holding up their adorable newborn daughter, who was born on Friday 5 November.The couple have called their adorable tot Noa – a very pretty name indeed. But does the sweet moniker have a meaning? Let's take a look...