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Voyager 1 is a light-day away by November 2026

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41–50 of 124 posts

Re: Voyager 1 is a light-day away by November 2026

#41
post #31

Earlier quoted context omitted.

For the next 300-500 years, yes. But there is plenty of things to do, stuff to build and room to expand within a light-day from Sun.

No other place is habitable within a light day of the sun.

A good argument for making sure our planet stays habitable. Caring about the environment isn't just for hippies anymore!

Re: Voyager 1 is a light-day away by November 2026

#42
Elite Dangerous is a modern sci-fi space simulation game. It takes place in the 34th century. You can actually visit solar system (can't land on Earth yet), and catch up with two Voyagers. They are where they would be in 1200 years, approximately 25 light days away from the Sun.

Re: Voyager 1 is a light-day away by November 2026

#44
post #6

It's expected never to encounter any other object in all eternity. Unless of course someone deliberately aims for it. I heard once it will eventually lose it's form entirely and just drift through space as a melted lump of metal. For some reason that reminds me of Red Dwarf. We are going to lose it before long i wonder if it will be possible to find it on a future date in theory.

No chance of it ever being hit by anything?

Space is well named.

Re: Voyager 1 is a light-day away by November 2026

#45

Supplied headline will be true in 1 year. Actual headline: On November 13, 2026 Voyager Will Reach One Full Light-Day Away From Earth

It's already true because implied precision and comparing continuous measurements for equality and all that. It's both pedantic and meaningless to say it's true on (all of) Nov 13 2026 but not true today.

Re: Voyager 1 is a light-day away by November 2026

#46

Humanity’s greatest journey so far has only reached the closest world to us: the Moon ... in a universe that stretches endlessly in every direction and is seemingly infinite. It's kind of wild to think about: we might end up collapsing our own civilization before we ever make it beyond our solar system. At this point, I suspect the next real explorers won't be us, but probes carrying intelligent machines..our robotic…

"we might end up collapsing our own civilization before we ever make it beyond our solar system."

Given what I see in the past 15 years, I don't particularly see that as a problem, honestly.

Re: Voyager 1 is a light-day away by November 2026

#47

Earlier quoted context omitted.

No other place is habitable within a light day of the sun.

A good argument for making sure our planet stays habitable. Caring about the environment isn't just for hippies anymore!

Works up until the earth becomes uninhabitable in 600M years, before then humans are going to need to find and colonize a different planet.

Re: Voyager 1 is a light-day away by November 2026

#48
post #46

Humanity’s greatest journey so far has only reached the closest world to us: the Moon ... in a universe that stretches endlessly in every direction and is seemingly infinite. It's kind of wild to think about: we might end up collapsing our own civilization before we ever make it beyond our solar system. At this point, I suspect the next real explorers won't be us, but probes carrying intelligent machines..our robotic…

"we might end up collapsing our own civilization before we ever make it beyond our solar system." Given what I see in the past 15 years, I don't particularly see that as a problem, honestly.

Lol

Re: Voyager 1 is a light-day away by November 2026

#49
I remember as a kid seeing the first photos of Uranus and Neptune from the Voyager probes. What's sad to me is they remain to this day the only time we've ever visited these ice giants. There have been a number of proposals over the years but none have been selected and it seems like 2045-2050 is the soonest we could get to Uranus (more for Neptune) but that pretty much requires a launch by 2034 and we've pretty much run out of time for a mission to be selected to that window given that it would be a complex and expensive flagship mission. I guess it depends on whether it's a flyby (like New Horizons) or an intercept mission, which would take substantially longer.

Obital mechanics are a funny thing however. You see this with the complicated BepiColombo trajectory to Mercury [1] that requires multiple passes on Venus. Mercury orbits at ~48km/s (compared to Earth's 30km/s). Fun fact: the escape velocity of the Sun is 42km/s so it's easier to leave the Solar System than intercept Mercury.

One difficulty is there aren't large gas giants to slingshot or brake around.

Uranus's orbital velocity is ~6.8km/s so it's both really far and requires a ton of delta-V to slow down to intercept.

Anyway, I digress.

So Voyager 1's speed seems to be ~17km/s, I guess relative to the Sun. People talk about the time required for interplanetary (let alone interstellar) travel but we can do much better than this with relatively near-future technology.

We need a whole bunch more Earth-orbit space infrastructure and industry to do anything, really. Lower launch costs in particular. I think this future is orbital rings [2]. This would revolutionize getting stuff into orbit but also launching vehicles to other planets. Basically you accelerate on the inside of the ring at ~2G with magnetic levitation to counter the linear momentum. You can reasonably get ~15km/s with this, adding to the EArth's 30km/s ideally so even without fuel you can get to ~45km/s.

[1]: https://www.youtube.com/watch?v=BK3F4fmqtbA

[2]: https://www.youtube.com/watch?v=LMbI6sk-62E

Re: Voyager 1 is a light-day away by November 2026

#50
post #40

Earlier quoted context omitted.

No other place is habitable within a light day of the sun.

ISS is one such place.

My understanding is that ISS is not self-sustaining even in principle. It consistently needs to be resupplied with water and breathable air as the station continuously leaks it. These resupplies happen about once every month or two. This article goes into quite a few details about what would be needed for actual self-sustainable human space exploration and it looks like there's quite a few engineering challenges to work out.

https://www.frontiersin.org/journals/space-technologies/arti...

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