1962 - The Soviet Union recruited five women to become cosmonauts. 1963 - June - Valentina Tereshkova, cosmonaut from the USSR, becomes the first woman in space. She flew Vostok 6, orbiting the earth 48 times, and was in space nearly three day.
Scientists think that if we heat a certain body to an infinite temperature, the wavelength is zero !! that is there is no light at all, in other words there is black radiation and the resulting fire resulting from burning this body of the infinite temperature is dark black.
Place a sugar cube on a fireproof surface (an ashtray, for example). Challenge your mark to set it on fire using a match. They won't be able to do it. When they give up in frustration, rub some fine ash onto the cube, then set it on fire. It will burn with a nice blue flame. Your mark may object, and say that it is the ash burning. You reply that it is indeed the sugar burning; the ash acts as a catalyst and is not burned.