1 To be safe, USDA recommends that all pressure canners must be vented 10 minutes before they are pressurized. 2  To vent a canner, leave the vent pipe (steam vent) uncovered (or manually open the petcock on some older models) after you fill the canner and lock the canner lid in place.
There would be no place to land, and the ship would get crushed under Neptune's massive gravity, or ripped apart by its weather. To get there, we would have to build a space ship that can travel extremely fast. Then it would have to orbit Neptune or be incredibly durable to get inside of the planet. It would also need a large supply of O2, food and water.
At the speed of 100,000 km/hour, you would reach Neptune in 5.12 years. so it ''could'' take about 2 years if you travel at a greater speed.It could also take 12 years if you travel at a slower speed. 12 years to travel to Neptune not 5.12 or 130 days. it took voyager 2 twelve years to travel to Neptune.But, he did stop at other planets along the way.t the fastest current spacecraft speed (other than re-entry from the Moon), which is about 60000 km/hr, it would take at least 100 days to reach Mercury, depending on its pos â¦ ition in its orbit. It could take as long as 120 days.