Recent comments in /f/space
ryschwith t1_j5p5jlv wrote
Reply to comment by ndecizion in Arrakhis: The tiny satellite aiming to reveal what dark matter is made of | "The European Space Agency (ESA) recently announced a new mission of its science program: a small telescope orbiting the Earth dubbed Arrakhis." by Tao_Dragon
There has to be some sort of prize for these at the annual holiday party.
spacex_fanny t1_j5p465b wrote
Reply to comment by Redditdrifter0 in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
Yes, going ~850 km/s is not feasible today because we don't have torch drives like in The Expanse.
Torch drive / torchship is the generic term for the idea, an idea which has been used in various works of sci-fi. See more:
Redditdrifter0 t1_j5p2w95 wrote
Reply to comment by spacex_fanny in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
Yah but by the last second before deceleration on the first day wouldn’t you have to be traveling close to 2 million miles per hour? How’s that remotely feasible?
[deleted] t1_j5p2ofl wrote
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SonicHedgePig t1_j5p0yrm wrote
Reply to comment by Aggravating_Teach_27 in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
I was thinking more along the lines of local travel or even a generational colony ship in that time frame. I think we are very long way from interstellar travel.
Like I've said earlier in another comment I'm just a dreamer who wants to see the start of it before I die.
spacex_fanny t1_j5p0xx5 wrote
Reply to comment by Redditdrifter0 in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
"You are technically correct, the best kind of correct."
Some may call it 'decelerating' for the second half, but in physics this also counts as accelerating (just in the opposite direction).
22 mph = 35 kph = 9.8 m/s = 33 ft/s
Thatingles t1_j5p0qol wrote
Reply to comment by ndecizion in Arrakhis: The tiny satellite aiming to reveal what dark matter is made of | "The European Space Agency (ESA) recently announced a new mission of its science program: a small telescope orbiting the Earth dubbed Arrakhis." by Tao_Dragon
Should only be allowed if the probe is looking for wormholes.
Thin_Illustrator2390 t1_j5p0pbk wrote
Reply to comment by Aggravating_Teach_27 in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
it’s wild to think that there’s so much outside our system but we as humankind will never ever see it
Aggravating_Teach_27 t1_j5p0l9h wrote
Reply to comment by SonicHedgePig in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
Ion engines don't help you at all in interstellar distances. Not even for moving people around the solar system as they take forever to gain speed. They are nice to send unmanned probes to far away places in the solar system in multi-year missions and that's about it.
I'm not disparaging ion engines tech, it's wonderful. But falls terribly short of the sci Fi stuff the OP mentioned.
The sad reality is the only likely development left with the physics we know is nuclear engines, and those would still allow for slow but bearable transportation inside the solar system.
Nothing we have or can build with our current tech and understanding of physics allows interstellar travel, at all. Never mind quick and easy interstellar travel like in sci Fi.
Paradox68 t1_j5ozyu1 wrote
Reply to How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
It’s after any of our lifetimes, sadly.
Born too late to be a real pirate, born too soon to be a space pirate.
[deleted] t1_j5ozx8t wrote
Reply to comment by echochamber4liberals in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
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Aggravating_Teach_27 t1_j5ozfzs wrote
Reply to comment by tommy4991 in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
If you mean traveling inside the solar system, yes, that seems a likely estimate.
If you mean interstellar travel, either we find a loophole in physics that allows for traveling at a significant portion of C with our current energy sources, it we find a new energy source,, or the answer is never.
Redditdrifter0 t1_j5ozfmx wrote
Reply to comment by Bubbagumpredditor in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
Dude that’s accelerating 22 mph every second until you get there…
Limos42 t1_j5ozb35 wrote
Reply to comment by CloverArms in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
SpaceX's Starship is about to change all that. The shuttle cost billions per launch, and current (manned) rockets cost hundreds of millions.
Starship will cost an order of magnitude less per launch, and with it's 10x capacity of existing launch vehicles, the cost per kg is another order of magnitude cheaper.
This "cheap" access to space will result in the next leap in human advancement. So much new/renewed focus on new problems to solve, which'll result in new technologies, new inventions, new advancements.
The next 5 years are needed for this new paradigm to mature and become a "commodity" (just like the passenger jet era of aviation) but, from there, the "explosion" will begin.
The 2030's will be an amazing and exciting time to be alive. And, on a slightly different tangent, I can't wait to see what the Clipper and Juice missions learn about Europa, Cassini, and Ganymede (Jupiter), and what Dragonfly learns about Titan (Saturn). Hopefully we'll have something in the works for Enceladus (Saturn) soon, too!
Exciting times ahead!
[deleted] t1_j5oz1td wrote
Reply to comment by PintLasher in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
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asupposeawould t1_j5oyw4h wrote
Reply to comment by ferrel_hadley in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
I read somewhere that even if we did have the potential to go really really fast like warp drive speed stopping would take years or if we were able to stop somewhat instantly the amount of force would destroy anything in front of us so if we just happened to stop Infront of earth it would be destroyed lol
CptKeyes123 t1_j5oyubt wrote
Reply to How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
400 years is a bit pessimistic. Konstantin Tsiolkovsky, one of the key minds in rocketry, assumed that we wouldn't achieve orbit until the 21st century, let alone sending ships to the moon, or sending Voyager into interstellar space. I'd say we don't know, and to keep in mind that the future is always closer than we think.
Aggravating_Teach_27 t1_j5oyj3f wrote
Reply to comment by gwizone in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
Science fiction has caught up and surpassed reality where physics allow.
Our mobile phones are way more advanced than any intercom system in old sci Fi shows. While at the same time our spaceships work pretty much in the same way than in the 60s
Physics allowed for one thing and made the other extremely challenging. The solar system is the ceiling with the physics we know, and barring new physics, it'll remain that way forever.
tommy4991 t1_j5oygl6 wrote
Reply to comment by MaximusZacharias in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
You make some good points, only time can tell my friend
Adeldor t1_j5oy5tv wrote
Reply to comment by DonaldFauntelroyDuck in Do you think we will ever be able to communicate faster than the speed of light using entangled particles? by DefenderOfTheButter
I had a look at your link, but didn't see anything indicating useful FTL communication.[*] Further, by all understanding, any such communication between points in our universe - even if attempting to bypass actual traversal through this space - results in time travel, raising the specter of causality violation. Regarding the paper's reference to "many worlds," that might be the only way around said violation. But again it would not be useful, as no information within the same timeline would be transferred.
[*]: If I missed it, could you highlight or quote the text?
xadirius t1_j5oy19t wrote
Reply to How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
Unfortunately I don't see human reaching any such space travel anytime soon. We're still too heavily in competition with ourselves to make the truly monumental leap in such technology. Hell even the aerospace scientists in the US are competing for funding rather than collaborating for success/advancement.
Aggravating_Teach_27 t1_j5oxx6b wrote
Reply to comment by Enorats in How many years do you think we have until space travel? Something like cowboy bebop by Aware_Ad2047
Thit.
Between 20 years and never ever, depending on whether it's possible at all, and then, even if possible, on wether it's actually feasible for tiny, delicate, short lived and insignificant human beings.
Any challenge in transportation we've mastered till now is nothing in comparison with the challenge posed by interstellar travel. And that was knowing physics allowed it.
[deleted] t1_j5oxu0i wrote
okay_booma t1_j5owx8l wrote
I’d like to see a Saturn lightning strike as well as hear it. The lightning there is around 10k more powerful than earth.
Bipogram t1_j5p5m64 wrote
Reply to comment by ghostoftheai in Have you ever thought about what it sounds on jupiter by Western_Home6746
We can walk on things because they're rigid solids.
But I doubt that there's a nicely defined discontinuity between the metallic hydrogen ocean and some rock.