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.
By Rachel Feltman July 9, 2015. NASA's Amy Shira Teitel explains why the New Horizons spacecraft is going all the way to Pluto, just to fly by it quickly. (YouTube/NASA New Horizons) NASA's encounter with Pluto is coming up quick -- just a few days away, on Tuesday -- but it will end just a few hours later. After almost a decade of speeding through space to get to Pluto, the New Horizons spacecraft is gonna keep zipping right on past it.