The Instigator
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The Contender
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Extraterrestrial contact is very unlikely

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Voting Style: Open Point System: 7 Point
Started: 3/26/2013 Category: Science
Updated: 3 years ago Status: Post Voting Period
Viewed: 630 times Debate No: 31751
Debate Rounds (3)
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There might be aliens halfway across the Milky Way galaxy. But they're not stealing your cows.


Star Wars and Star Trek were inspired by the Space Race, ending with the United States moon landing.

The genre of Science Fiction has fueled the imagination of youngsters everywhere.

Some remain with the impression of Captain Kirk traveling from star to star to experience alien life in all it's beauty.

My position is that it is unlikely in the extreme for us to travel the stars. If it's impossible for us, it's impossible for them.


If they do exist, and science says that they do, then it is very possible that their species has been on their planet longer than ours leaving time more time to evolve and develop ways to contact us. In my opinion, it is a matter of time until one of us can figure out how to contact the other.

p.s. I don't think contact involves cows.
Debate Round No. 1


Let's do the math.

Radio Contact is Impossible

The Milky Way galaxy is about 100,000 light years in diameter.[1] This is about 50,000 light years radius. The solar system is estimated to be about 26,000 light years from the center.[2] This puts us at 76,000 light years from the far end of the galaxy.

Our radio bubble spreads ~50 light years from earth. Each year, the radio waves move one light year towards nothing. Why nothing? It's actually in the radio waves.

"Because of this inverse square law, all of our radio signals become indistinguishable from background noise at around a few light-years from earth. For a civilization only a couple hundred light-years away, trying to listen to our broadcasts would be like trying to detect the small ripple from a pebble dropped in the pacific ocean off the coast of California – from Japan."[3]

Physical Contact Impossible

The Voyager I is the world's fastest spacecraft, moving at the breakneck speed of 35,000 mph. This is actually quite slow. It would take it 167,591,314 years to travel one light year. Alpha Centauri is 4.37 light years from the Sun, or 732,374,042 years away by spacecraft.

Forget 76,000 light years away, that's 12,736,939,864,000 years.

No Source Cited

My opponent made a comment crucial to his position. My question: if science says that aliens exist, please cite the source. Preferably a scholarly journal. This statement seems rather controversial, and definitely untested.

If there is no tested evidence of aliens, they are merely a hypotheses. A hypothesis is not a definitive statement, it is more of a conjecture.



michaeltaffe3 forfeited this round.
Debate Round No. 2


Vote Pro.


michaeltaffe3 forfeited this round.
Debate Round No. 3
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