The Cube Method. If you have a little bit of time on your hands, you can cut the stick(s) of butter into fourths and then cube into small pieces. The smaller the cubes, the quicker the butter will soften. Just leave them at room temperature for about an hour or until soft to the touch.
The first successful Venus flyby was NASAâs Mariner 2. This spacecraft was launched on August 8th, 1962 and made a successful flyby on December 14, 1962. So that calculates to 110 days from launch to arrival at Venus. The most recent spacecraft to fly to Venus was ESAâs Venus Express. It was launched on November 9th, 2005, and took 153 days to make the journey to Venus.
It could take as long as 120 days. Most space probes do not accelerate constantly, but use planetary gravity effects to speed up or slow down, which involves long, complex orbits taking a year or more. In this case, a spacecraft actually has to decelerate from the Earth's orbital speed (about 107,000 km/hr) to reach Venus or Mercury.