A. E. writes: I have a 1981 Charles/Diana wedding coin, special edition 25 pence silver piece. I thought that Great Britain doesnât make a 25 pence.It is about the size of a 50 cent piece.he copper-nickel issues are worth about US$1, issued in a plastic bank envelope, CuNi specimen, issued in a Royal Mint folder, about US$3.00. A silver (sterling) proof version was marketed by the British Royal Mint (28.27 grams sterling silver), mintage: 218,000. Value: about $25.
How long do you have to study to become an astronaut? A: NASA requires its mission specialists and its commander and pilot astronauts to have bachelor's degrees in biological science, physical science, mathematics or engineering; most people take four years to earn these degrees.
As a response to President Bush's vision for space exploration, NASA, in May of 2005, began the Exploration Systems Architecture Study (ESAS), which served as the blueprint for future spacecraft that would eventually send humans back to the Moon and on to Mars.ne of the problems of getting a spacecraft to another planet is that we first have to get it out of Earth's orbit, explained Engelund. So we have to speed it up to a high enough velocity to break [free of] the Earth's gravity field.