9.Pluto- 39.4 AU why do astronomers not measure the distances to stars in kilometers? distance to stars are so great that the number are too large to work with easily.
Some seeds can last for three to four years, such as: 1  asparagus. 2  beans. 3  broccoli. 4  carrots. 5  celery. 6  leeks. 7  peas. 8  spinach.
There are no expiration dates on the packagesâ¦. A. Most flower and vegetable seeds will stay viable for at least a few years if they're stored at a low enough humidity and temperature. The ideal situation, says the USDA, is a room where the temperature and relative humidity add up to less than 100.