A primary reason is that viruses do not possess a cell membrane or metabolise on their own - characteristics of all living organisms. Examples of common human diseases caused by viruses include the common cold, the flu, chickenpox and cold sores.
In the past spacecraft have taken greatly different amounts of time to make it to Saturn. Pioneer 11 took six and a half years to arrive. Voyager 1 took three years and two months, Voyager 2 took four years, and the Cassini spacecraft took six years and nine months to arrive. The New Horizons spacecraft took a short two years and four months to arrive on the scene.
How long does it take for a package to get to Scotland from the US? about 10 or 11 days it really depends on where you are in the us and where they are in Scotland.t depends on a lot of factors. Shipping speed, how long it takes for the person to get it shipped, and customs. Customs can often â¦ make packages take a lot longer to get shipped than they should. 3 people found this useful.