An Alien Encounter 20 Years Away?
Astronomers have been actively searching for extraterrestrial civilizations for the past 50 years, but so far have come up empty. Now a top Russian astronomer predicts the "eerie silence" will be broken by 2031.
What's the Big Idea?
"Life exists on other planets and we will find it within 20 years," said Andrei Finkelstein, director of the Russian Academy of Sciences Applied Astronomy Institute. Finkelstein made this prediction at a conference this week in St. Petersburg, and it instantly made headlines around the world. After all, while others have argued the same point, that we will soon detect intelligent life, and perhaps civilization on another planet, Finkelstein's time scale is particularly bold. For instance, theoretical physicist and Big Think expert Dr. Michio Kaku says contact with our earth-like twins could occur "perhaps sometime in this century." SETI (Search for Extraterrestrial Intelligence) Institute Director Jill Carter hedged her bet when she told Big Think the detection of an extraterrestrial signal "could happen tomorrow," and it could also "happen never."
What's the Significance?
How likely is it that life will be discovered on an Earth-like planet? This question was once the stuff of supermarket tabloids. Today, "the pendulum has swung from extreme skepticism about extraterrestrial life to extreme credulity," says Arizona State University Cosmologist and Astrobiologist Paul Davies. And "the truth is somewhere in between," Davies says.
While credulity may be in fashion, the actual scientific "facts on the ground," however, have not changed much over the last 50 years. And many people are asking why there is no evidence. With all of the celestial monitoring that has gone on with increasingly powerful instruments over the years, what accounts for the "eerie silence"?
According to Professor Davies:
If you ask the astronomers of the sharp end of SETI [Search for Extraterrestrial Intelligence] why they think there has been an eerie silence they’ll say, “Well we only have been doing it for 50 years. We’ve just started. What more do you expect? It’s a big universe out there.” And in fact, to put that into context they look carefully. It’s just a few thousand stars. There are 400 billion stars within our Milky Way galaxy alone, so it is a needle in a haystack search.
A needle in a haystack indeed. And yet, there is a way to calculate the possibility that a life-sustaining planet exists in our galaxy. In this video below, Carl Sagan describes the so-called "Drake Equation," named after SETI founder Frank Drake, in the Cosmos program called "The Encyclopaedia Galactica." The Drake Equation is used to calculate the number of planets in the Milky Way Galaxy that are suitable for life. The answer, it turns out, is in the millions for our galaxy alone.
Contrasted with this is a pessimistic notion known as the Fermi paradox that posits that after several billion years of evolution, an intelligent civilization would likely destroy itself, very shortly after achieving advanced technological abilities such as radio astronomy. On the other hand, Sagan demonstrates the possibilities at play if we were to take a generally more optimistic view of what can be achieved by intelligent life.
Step inside the unlikely friendship of a former ACLU president and an ultra-conservative Supreme Court Justice.
- Former president of the ACLU Nadine Strossen and Supreme Court Justice Antonin Scalia were unlikely friends. They debated each other at events all over the world, and because of that developed a deep and rewarding friendship – despite their immense differences.
- Scalia, a famous conservative, was invited to circles that were not his "home territory", such as the ACLU, to debate his views. Here, Strossen expresses her gratitude and respect for his commitment to the exchange of ideas.
- "It's really sad that people seem to think that if you disagree with somebody on some issues you can't be mutually respectful, you can't enjoy each other's company, you can't learn from each other and grow in yourself," says Strossen.
- The opinions expressed in this video do not necessarily reflect the views of the Charles Koch Foundation, which encourages the expression of diverse viewpoints within a culture of civil discourse and mutual respect.
Scientists make an important discovery for the future of computing.
- Researchers find a new state of matter called "topological superconductivity".
- The state can lead to important advancements in quantum computing.
- Utilizing special particles that emerge during this state can lead to error-free data storage and blazing calculation speed.
Erik Verlinde has been compared to Einstein for completely rethinking the nature of gravity.
- The Dutch physicist Erik Verlinde's hypothesis describes gravity as an "emergent" force not fundamental.
- The scientist thinks his ideas describe the universe better than existing models, without resorting to "dark matter".
- While some question his previous papers, Verlinde is reworking his ideas as a full-fledged theory.
As tempting as it may be to run away from emotionally-difficult situations, it's important we confront them head-on.
- Impossible-sounding things are possible in hospitals — however, there are times when we hit dead ends. In these moments, it's important to not run away, but to confront what's happening head-on.
- For a lot of us, one of the ways to give meaning to terrible moments is to see what you can learn from them.
- Sometimes certain information can "flood" us in ways that aren't helpful, and it's important to figure out what types of data you are able to take in — process — at certain times.