Because the distances are just too great.
Our nearest star is over 4.2 light years away.
To drive to it at 100mph would take over 28 and a half million years.
The cross between rabbit and squirrels is so small, that it is nearly impossible tha they are related!
It's nearly impossible
It's nearly impossible because your brain is telling your body to do something and you are trying to stop it at the same time.
it is extremely unlikely nearly impossible
It is nearly impossible to remove it.
for fun
yes
Bombs are nearly impossible to dodge if you are desperate go off the trackto dodge it. Bombs are nearly impossible to dodge if you are desperate go off the trackto dodge it. Bombs are nearly impossible to dodge if you are desperate go off the trackto dodge it.
Selective breeding be nearly impossible without a wide variation of species. This is usually done to create a specific breed of animals.
compress it nearly impossiable to COMPRESS solids and liquids
Travel between the stars is not impossible, or even "nearly impossible". It is simply, at this point, very difficult, very dangerous, and very expensive. Much the way travel between Europe and North America was in, say, 1520, 100 years before the Mayflower sailed to America.THIS YEAR, travel to the stars is impossible. 100 years ago, travel to the MOON was impossible; we did it 40 years ago! Travel to the stars will be impossible to my generation; but then, I'm nearly 60. Travel to the stars for you, or for your children, will almost certainly be "merely" very difficult and expensive. For your great-great-grandchildren, travel to the stars may be routine.The Earth is small and fragile; there are big rocks flying around the solar system, and eventually one of them is going to hit us. Again. It happened 65 million years ago, it happened 252 million years ago, and it has probably happened many other times that we don't have any records of just now.If the human race is to endure for more than a few centuries, the word "ship" will inevitably come to be synonymous with STARSHIP.
It's nearly impossible