St Vincent

PLANET OF TWILIGHT

ARE WE ALONE?

6 STAMPS :

VOYAGER 2 August 20 1977 Start from KSC - exit Asteroid belt Sept 10th 1978 - 6000 Pictures of ring belt of planet and travels from Uranus System composed of 10 Moons. Beautiful pictures of Planet and satellites UMBRIEL and TITANIA.

PLUTO PROJECT FUTURE Eleven years of travel for study the last (for the moment) planet of the Solar System, 6 Billions of KM, 6 light hours to get to Earth. Little sounding probe of 120 Kg for flyby Pluto and its Charon Moon.

PLUTO Project FUTURE Evolution of Pluto Project, Study of Pluto and Charon

NUAGE DE OORT Exterior part of the Solar System, tank of comets and asteroid out of Pluto orbit

KUIPER 2012 Originally designated the Pluto Fast Flyby (PFF), the Pluto Kuiper Express mission is designed to fly by and make studies of the planet Pluto and its satellite Charon in 2012

VOYAGER 2 FOLLOW NEPTUNE - Arrival August 24th 1989, 12 years travel to join the 8th planet of the Solar System, Picture of Triton August 25, close-up photo mission. Continue out of the Solar System.

On the frame of sheetlet 2 :

PIONEER exit Solar System. Message to extraterrestrial intelligence put on the hull of Pioneer.

SOUVENIR SHEET 2:

SETI - Hommage to Carl Sagan. Scientist, Project Pioneer 10 - 11 and Voyager 1 and 2. Research for Extraterrestral intelligence.
Dead on the Dec. 21 1995, 62 years old. Co-founder of SETI numerous projects.

This Souvenir Sheet isn't already issued.