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.
1 Neptune is the furthest planet from the sun and the fourth largest. 2  It has a diameter of 30,775 miles (49,528 km) which is four times larger than Earth. 3  Neptune is 30 times further away from the sun than Earth is.4  The dwarf planet Pluto moves inside Neptune's orbit every 248 years, for periods of 20 years. Neptune is the furthest planet from the sun and the fourth largest. 2  It has a diameter of 30,775 miles (49,528 km) which is four times larger than Earth. 3  Neptune is 30 times further away from the sun than Earth is. 4  The dwarf planet Pluto moves inside Neptune's orbit every 248 years, for periods of 20 years.