Here is an interesting hour long movie with a realistic quote:
Well no, according to the eminent physicist Stephen Hawking. "If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans," Hawking has said in a forthcoming documentary made for the Discovery Channel. He argues that, instead of trying to find and communicate with life in the cosmos, humans would be better off doing everything they can to avoid contact. https://www.theguardian.com/science/2010/apr/30/stephen-hawking-right-aliens
Stephen Hawking (shown here in 2008) has been vocal about fears that an advanced alien civilization might wipe out humanity.
Credit: NASA/Paul Alers
Since at least 2010, Hawking has spoken publicly about his fears that an advanced alien civilization would have no problem wiping out the human race the way a human might wipe out a colony of ants. https://www.space.com/29999-stephen-hawking-intelligent-alien-life-danger.html
Here is the interesting Science Fiction movie, on the same topic, which originally appeared on television.
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Last edited Thu Sep 21, 2017, 06:31 PM - Edit history (1)
Many communications satellites are in Geostationary High Earth Orbit, making them easy to find for technicians at television and radio stations. Also, certain types of military satellites orbit even higher, for various reasons. A High Earth Orbit is a geocentric orbit with an altitude entirely above a geosynchronous orbit (35,786 kilometres (22,236 mi) Signals sent to and from these satellites are more powerful and focused: However, an advanced life form on a distant planet might utilize extremely sensitive reception equipment.
Here is a beautiful image captured by a NASA radio telescope:
Not only deliberate signals are sent into deep space but also accidental signals are sent from Earth. Space creatures could possess the technology to at least detect the source of both types of signals.
First, every physics we know says that interstellar travel is not only difficult in the extreme, but totally impractical. It's the whole rocket equation business. This is basic physics that Hawking should be able to solve in his head. What it says is that the energy required for interstellar travel imposes a rather severe penalty on those who would attempt it. Such are the distances between stars, let alone the distances between intelligent life forms.
Then, there's the time for communications. Of course, Hawking knows this, too. I just do not understand his position on communicating with putative aliens when a one way communication would likely take centuries, or even millennia, depending on their distance from us.
It's a puzzlement to me. I say broadcast away. The chances it will be received is next to nil anyway. The chances that it will be received within our lifetime is slim. Such are the distances in our galaxy.
BTW, interesting Outer Limits episode. I liked it.
The nearest planets, orbiting within a distance similar to Earth's orbit around Sun, are trillions (1,000,000,000,000 = one trillion) of miles away. The first planet, of this kind, was confirmed in 1992, according to some websites. Water, which appears necessary in sustaining life, has not been detected on any of these Earth like planets. The five closest planets orbiting around distant stars are extremely brief, compared to Earth, which completes orbit around the Sun (a star named Sol) in about 365 days.
Even microscopic life needs time to adjust to dramatic changes, which occur during dry seasons and rainy seasons. In other areas Summer climates are much warmer than Winter conditions. Not only plants but also animals need time to adjust to profound variations in the weather. Spring and Fall allows complex life forms a chance to adjust and reproduce, before weather conditions become harsh.
Evidence of the closest Earth-like planets was produced decades ago, in many cases. In other cases, light - the fastest moving phenomenon known - was emitted from these planets centuries ago. Plenty of large asteroids and comets roam through the universe; and any of these newly detected, distant planets could have been destroyed by a large meteor last week. If intelligent life existed on a planet before impact with a large meteor, those creatures are either destroyed or technologically impaired after a relatively common collision. Not only travel but also communications to or from these distant planets is unlikely.
Even so, the sheer number of Earth-like planets, orbiting around distant stars, is so staggering that theorizing life exists on other planets is the most reasonable assumption. Based on Kepler space mission data, astronomers reported, on November 2013, there could be about 40 billion Earth-sized planets orbiting in the habitable zones around Sun-like stars and red dwarfs in the Milky Way. The Milky Way is a relatively small part of the universe.
Most likely, there is life on other planets; but if highly evolved space creatures discovered life on Earth they would conclude - due to the way humans treat other life and the planet - that there is no intelligent life on Earth. Which intelligent life form would really find a use for increasing polluted oceans, on a planet where people appear to be doing everything possible to accelerate Climate Change, while denying that it exists? Who wants to spend their precious time attempting to communicate with fools?
cartoon furnished courtesy of https://www.pinterest.com/explore/calvin-and-hobbes-quotes/
What if this planet is the tiny ember in the vastness and our "destiny" is to overcome time and space and our own physical impossibilities?
What if we knock and knock, and nothing answers?
What movie is that? 
