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Seven earth-sized planets discovered circling a star 39 light years from Earth

nature.com

491–500 of 754 posts

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#491
post #70

Earlier quoted context omitted.

I guess J.J. Abrams is somewhat forgiven for this, then: http://vignette4.wikia.nocookie.net/startrek/images/2/29/Vul... [edited for direct .jpg]

I always thought that Firefly's scenario of a bunch of Earth-like worlds in close enough proximity to have regular trading ships flying between them was unrealistic. Now, not so much. This system even fits in with the "Abandon Earth en-mass, move to new set of worlds" backstory. So, what did J.J. know, and when did he know it? And for that matter, how did he know?

Joss Whedon is the name you're looking for, not JJ Abrams.

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#492
post #444

Earlier quoted context omitted.

This strikes me as a rather disingenuous question.

why? either you think NASA is good at science or you don't, you can't pick and choose depending on whether or not you like the results

Okay, sure. I can give you a serious answer if you'd like.

First of all, you're attempting to take down some strawman. _Who_ is applauding this discovery, and simultaneously calling NASA's climate change research "all a big con"? It's disingenuous when you just present a (IMHO) off-topic opinion that the majority of the other commenters here have, in the form of an innocent question. If you would like to discuss the view of a public figure or other commenter, that's fine. If you want to discuss how you think that people should accept NASA-related research as a whole or not at all, that's fine.

But don't ask a false question to take down a strawman.

Second, your statement "either you think NASA is good at science or you don't" is a massive trivialization. NASA is a 19 billion dollar organization, with over 17,000 employees (not counting contractors). Beyond the problems of the phrase "good at science" (What does it _mean_ to be "good at science"? That's an incredibly complex topic.), NASA is huge, with many, many different people and departments, opinions and beliefs, cultures, etc. Thinking of NASA as a fixed, singular, cohesive entity is a flawed assumption.

And I guess finally, to get back to your original question, it's quite straightforward. The (economic, political) implications of habitable planets 40 light years away is quite different from the (economic, political) implications of American industrial and economic activity needing to be massively changed, very quickly.

Don't get me wrong, I'm a firm believer that climate change is a human-caused phenomenon. But I don't feel that your original question was presented in the best possible way.

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#493
post #283

Earlier quoted context omitted.

Short answer: almost certainly yes, although i presume this is an improbable event.

It's not that improbable. They've found meteorites on Earth that have been identified as having come from Mars based on their mineral contents.

Sure, I was referring to the part where the microbe survives the initial blast, the passage through space, reentry, and landing, and happens to land in a spot where it can survive.

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#495

So how come when NASA tells us there are tiny invisible planets light years away we all applaud, but somehow when they point to the evidence of climate change right here right now it's all a big con?

For one thing, many of the people applauding the discovery of extra-solar planets do not thing climate change is a con.

And, conversely, many of the people who think climate change is a con are indifferent to extrasolar planets.

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#496
post #6

My favourite part of the press release: > The planets also are very close to each other. If a person was standing on one of the planet’s surface, they could gaze up and potentially see geological features or clouds of neighboring worlds, which would sometimes appear larger than the moon in Earth's sky. > In contrast to our sun, the TRAPPIST-1 star – classified as an ultra-cool dwarf – is so cool that liquid water cou…

> The planets also are very close to each other. If a person was standing on one of the planet’s surface, they could gaze up and potentially see geological features or clouds of neighboring worlds, which would sometimes appear larger than the moon in Earth's sky.

this reminds me of one my favorite films ever. it is just four minutes long

http://www.erikwernquist.com/wanderers/

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#497
post #53

"Due to its mass, the star has the ability to live for up to 4–5 trillion years" So when the rest of the universe cools off and stars start to die, Trappist one keeps on shining and shining... We need to get there. But first, let's get rid of our genocidal tendencies.

The optimism in this thread regarding the practical feasibility of long-distance space travel is encouraging. I truly hope it's just another hurdle for us to technologically overcome, rather than an insurmountable barrier.

Even if it weren't doable, who knows what kind of destiny awaits us as our mastery over physics advances.

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#498
post #444

Earlier quoted context omitted.

This strikes me as a rather disingenuous question.

why? either you think NASA is good at science or you don't, you can't pick and choose depending on whether or not you like the results

> either you think NASA is good at science or you don't

That's a false dichotomy.

Its quite possible to think (I am not endorsing this belief, only saying that it is not self-contradictory) that a large organization like NASA has people doing good and non-politicized science in certain areas in certain areas and bad and politicized science in others.

In fact, one could quite internally consistently believe that NASA does good, non-politicized science in some domains deliberately as a means of generating credibility so that people accept the bad, politicized science it does in other domains.

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#499

Just for curiosities sake, using the best technology humanity could get its hands on, what's the best case for the time it would take to reach that solar system?

StarShot [1] is gunning for 20% of the speed of light. At that speed, it would take a couple hundred years.

[1] https://breakthroughinitiatives.org/Initiative/3

Re: Seven earth-sized planets discovered circling a star 39 light years from Earth

#500

Earlier quoted context omitted.

I don't think the way you are arguing your points does you any favors.

Well, literallycancer, that begs the question of why nobody helps me with their ability and suggestions to argue better. I have had to do everything on my own. The way this message of mine is treated is perhaps the reason for or the reflection of the fact that mankind's usage of science and technology seem predetermined to lead to destruction. But feel free to ignore me. Everyone does whatever they want regardless of…

Your posts here have been pretty disparaging toward the scientific community. The scientific community does have problems with groupthink and cognitive biases, but it also has to contend with a flood of people who passionately defend idiosyncratic ideas without appearing to appreciate what counts as a scientific theory or scientific evidence. Every scientist and other technical domain expert has encountered dozens or hundreds of people offering the secret of why science is totally on the wrong track. (I don't work in physics or climate science, but I've experienced this in cryptography and number theory, which do relate to my job.)

In order to be taken seriously, I'd suggest that novel physical theories should accurately use existing technical vocabulary and notation (and define and explain the motivation for any new vocabulary), be expressed in quantitative terms, not pick a fight with the scientific community or impugn its good faith or intelligence, and hopefully make empirical, testable predictions (including better-explaining observations compared to existing theories).

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