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A Newly Discovered Planet 40% Larger Than Earth May Be Suitable For Life – Slashdot

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“nd the speculations here on actually traveling to these planets, considering how primitive our technology is presently for extraterrestrial travel and habitation is, remains in the area of rather inferior comic books.”
True but that works from the assumption our technology will always remain primitive and we’ll never improve and be wanting for somewhere to go. Also going there is one thing, CONTACTING whatever might already be there is an entirely different animal. In many ways it might be far better to com
“To approach the speed of light with our spacecraft is, by my suppositions, a rather distant accomplishment with our best current technology”
It is unlikely that will happen. It seems far more likely that we’ll work out a concept like warping or tunneling or something else we haven’t thought of yet which allows us to get from here to there without crossing all the intermediate space. It is hard to say how far away that any other development is when we don’t have an incremental path on the map that leads ther
It seems far more likely that we’ll work out a concept like warping or tunneling or something else we haven’t thought of yet which allows us to get from here to there without crossing all the intermediate space.
If that seems more likely to you … I really wonder what you learned in school.
https://www.sciencealert.com/engineers-have-proposed-the-first-model-for-a-physical-warp-drive
Both space warping and tunneling (aka wormholes) fall within our current understanding of physics. Accelerating a significant mass to anywhere approaching the speed of light really isn’t so I wonder what YOU learned in school. Something we haven’t thought of yet is ALWAYS a significant possibility. Our physics is not really how the universe works, it is merely a coherent mathematical model which does a decent job p
Both space warping and tunneling (aka wormholes) fall within our current understanding of physics.
No, they don’t.
They are correct solutions to some variations of Einsteins and Maxwells field formulas.
If you had read the article you linked, you probably had stumbled over a line like this: “however, to make such a thing, we need more energy than what is available in the whole known. universe”.
So, no: there is no “new physics”, that allows anyone in the universe to craft a warp drive or generate a useable worm
You could also move somewhere other than Australia, ya know?
To be fair, whether it’s 5ly or 500000ly doesn’t practically matter at this point anyway 😀
I guess that depends on how you define meaningful interaction. 210 years for round trip communication might not be meaningful for us as individuals but could certainly be meaningful for humanity.
If you are talking about GOING there then sure. I just meant attempting to communicate on the slim hope something intelligent might be there, understand and reply. 105ly of buffer against needing to fear each other having hostile intentions could actually be a good thing there.
Granted the odds aren’t spectacular but targeting these potentially life sustaining planets for such efforts definitely has a higher probability than just random sky sweeps into the black like SETI. It also seems more likely that we’d
At the rate we’re going, we could send a communication to them, and even if there’s someone there to send a signal back right at the moment it reaches them, we could be back to living like the stone age by the time the signal comes back at us. Their scientists will be wondering, some 330 earth years from now when no “got your tap-back, here’s a response” comes, if their equipment malfunctioned when they received the initial signal.
There’s no such thing as being any number of light years from a constellation. A constellation is a set of stars that appear near each other to an Earthbound observer looking up at night. The stars are not actually anywhere near each other, because it turns out the universe is three dimensional and stars are not simply holes poked in the firmament through which the light of heaven shines.
I went to the original paper to see what “40% larger” meant. Turns out it means radius (or diameter, duh); the paper gives a mass estimate of 25 Earths. If I’m reading it correctly, that’s a 2 sigma upper limit, so most likely mass is smaller…how much smaller, I don’t know. Still sounds like you’d be pretty heavy. Maybe it’s Harkonnen.

Maybe, I dunno, we should first focus on making this Earth habitable long-term?

Maybe, I dunno, we should first focus on making this Earth habitable long-term?
Yes! Ban astronomy for the sake of the environment! Force all astronomers to plant 1,000,000 trees each to make up for their crime!
The “super” in super-earth just refers to mass, not atmosphere, temperature, or anything else. A super earth is an extrasolar planet with a mass between 1 and 10 times Earth’s mass. Wikipedia has a list of planet types [wikipedia.org]
> How about calling it a Class M planet?
You, sir, win this thread.
Are they hunting for planets or for cookies?
Seriously, sometimes it seems like people spend more time coming up with tortured acronyms than they spend doing actual science.
Practically nobody outside the Benelux is going to get this, unless you provide a Link [wikipedia.org] to what Speculoos is…
Considering I had some with my coffee this afternoon here in Austria I think you should expand that radius a bit…
“Are they hunting for planets or for cookies?”
Liège is a catholic university, they have even cookies that are alive.
You’re right, my bad.
Are they hunting for planets or for cookies?
Now I have the image of Cookie Monster [google.com] peering at a telescope!
This is a job for…AI!
I tried the caption “Cookie Monster looking through a telescope” at several text-to-drawing websites. Most are pretty lame, but Craiyon at least showed the famous Cookie Monster and a telescope (but he was eating it…maybe that’s appropriate?). But wombo.art created the most reasonable picture, where CM (with four eyes) is at the right end of the telescope, and you could imagine he’s looking through it.
The gravity on that planet must suck. I want a planet with less gravity, not more.
“The gravity on that planet must suck. I want a planet with less gravity, not more.”
Why?
You’d never have to work out.
Depending on its composition it might well be lower instead of higher.
The material its made of matters.
I wonder if the gravity on one side of the planet is (noticeable) higher than the other? That is, on the dark side, you’ve got the gravity of the planet + sun pulling you towards your bed. On the light side, you’ve got planet – sun holding you onto your folding e-bike.
The planet and everything on it is in orbit around the same star, therefore nothing in orbit will feel the star’s pull any more than an astronaut orbiting the Earth would. It might have some pretty crazy tides though.
The problem with super-Earths is that their gravity might so strong that it’s impossible to leave their surface using rocket-powered spacecraft.
https://www.realclearscience.c… [realclearscience.com]
https://www.space.com/40375-su… [space.com]
They’re currently working really hard on reducing their population to make it fit their limited space, cut them some slack.
Took me a few reads too understand what that meant. Was wondering what satellite they could have possibly been referring to.
Assuming 1.4G (just translating 1.4x size as 1.4G, am aware that size does not equal mass and this is just simplification), it’s not impossible for humans to visit – although a long stay will be alot tougher.
It will be like carrying a 30KG body suit with me at all times if I was standing there.
As for tidal lock, the terminator line where day changes to night may be a viable place for life. This assumes there is some sort of life sustaining atmosphere.
Anyway this is all just guessing at possibilities. Doubt
Eh.
I carry an extra 30 kg everywhere I go. I do ok.
The radius is calculated to be slightly under 1.4 Earths. That means its mass is 1.4^3 times as great. According to the article, the upper limit (2 sigma) on the mass is 25x Earth. But I’m not sure how that works out in terms of the surface gravity, since the surface is 1.4x further away from the center. Still, it’s likely to be quite high.
There was a story in Analog about a high G world once, with centipede-like intelligent inhabitants who were trapped by their environment and had no idea of the outsid
It means the planet could be habitable, as opposed to some icy gas giant like Jupiter. With SPECULOOS-2c there is a chance for earth-like life. Not on Jupiter.
Jupiter is a huge ball of organic soup mixed in with hydrogen. Its quite possible some form of life could evolve in the dense gases further down though it would be nothing like on earth.
The article describes a search for flares on the parent star; the astronomers found no evidence of any. It’s reportedly a very old star, so maybe it’s slacking off in old age.
We wouldn’t have discovered the planet if the forces in either it’s orbit or rotation were too great for gravity to keep objects on its surface. because the planet itself would have pulled apart and scattered.
If those numbers were right, then you’d weigh a quarter pound or so less at night than you do during the day (at least near the equator). That’s because the centrifugal force of the Earth in its orbit is directed toward the night side. But in fact the centrifugal force of Earth’s motion in its orbit is almost exactly balanced by the Sun’s gravitational force–that’s why it’s a stable orbit. (Almost: the Earth’s orbit is slightly elliptical.)
I think the message is BSOD.
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