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.
No. Nothing can land on Jupiter as it does not have a solid  surface. However, one atmosphereic probe was sent to Jupiter in  1995, and the Galileo space probe was deliberat â¦ e burned up in  Jupiter's atmosphere in 2002.1 person found this useful.o. Nothing can land on Jupiter as it does not have a solid  surface. However, one atmosphereic probe was sent to Jupiter in  1995, and the Galileo space probe was deliberat â¦ e burned up in  Jupiter's atmosphere in 2002. 1 person found this useful.