At a 3 percent growth rate, its doubling time â or the number of years to double in size â is 23 years. (The doubling time for a population can be roughly determined by dividing the current growth rate into the number 69.. Therefore, 69/3=23 years.
But the attempt was scrubbed about an hour before launch due to the helium leak. Todays launch has been scrubbed due to a helium leak on Falcon 9's first stage, SpaceX officials announced in an update today. A fix will be implemented by the next launch opportunity on Friday April 18, though weather on that date isn't ideal. [ See photos of SpaceX's 3rd Dragon mission to the space station ].
Split and merge into it. Answer by Don Dfoofnik. Confidence votes 173K. There are three kinds of answers: ones that are mostly right, ones that are mostly wrong, and those that once were right but now are wrong. The first rocket to reach space was a V-2 (V-4)rocket launched in 1942 by the Germans during World War II. The first space satellite to orbit the Earth was Sputnik 1 in 1957. The first manned spacecraft was the Vostok I, which carried Soviet cosmonaut Yuri Gagarin into Earth orbit on April 12, 1961.