USPS

New Horizons’ Pluto Stamp is One Step Closer to Becoming a Reality

A little over a year ago Alan Stern, principal investigator on the New Horizons mission, announced the team's plans to…

12 years ago

USPS Commemorates Spaceflight Past and Present

Postage stamps honoring Mercury astronaut Alan Shepard, America's first man in space, and NASA's MESSENGER probe, the first spacecraft to…

14 years ago