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 ].
The Saturn V rocket was a three-stage rocket that NASA built to send people to the moon. The first stage had powerful engines that had the task of lifting a fully fueled rocket off the ground. This stage required 810,700 liters kerosene and 1,311,100 liters liquid oxygen. The second stage carried it from an altitude of about 68 kilometers (42 miles) almost into orbit. This stage took 331,000 liters of liquid oxygen and 1,000,000 liters liquid hydrogen.