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.
Fire only happens when a flammable gas is mixed with oxygen. So, how does a solid candle burn? If you heat wax hot enough, it chemically decomposes into flammable gasses and those burn. The catch is that, to get wax that hot, it basically needs to be inside a flame already.