SpaceX's main innovation was that they decided to build a rocket that wasn't optimized for performance or reliability, but cost. They were willing to bear huge development risks to create a new price category and capture latent demand for cheaper launches.
I'm curious whether we could cool the planet by pulling CO2 out of the air with scrubbers powered by fusion reactors, or if their heat output would cancel it out. Removing the CO2 would have the benefit of being an exponential thermal decrease (the planet gets less hot from the sun each day), and heat output from fusion plants should scale linearly with the rate at which the CO2 scrubbers run, so it's possible the scaling properties would work out...
The magnet with the strongest magnetic field isn't necessarily the best engineering solution for a fusion reactor. In particular, these magnets need to be cooled (plumbing can be bulky and coolant can be difficult to work with) and allow for easy servicing of the reactor components (particularly the vacuum vessel which will need replacing every ~10 years due to neutron embrittlement). This magnet design is noteworthy because of several factors: high-temperature superconductivity means they're cheaper and easier to cool, the high field strength allows for a smaller scale reactor, and the physical construction of the magnets makes them cheap to build and allows for easy disassembly during maintenance periods.
This is also why it's exciting to see the huge drop in satellite launch costs driven by SpaceX. Your satellite design is going to be much different if you have a few chances to launch on a $1B rocket per year, vs launching it for $10M anytime. Rather than one complicated reliable one, you might make 10 simpler ones and buy extra flights to do repairs if necessary.
There's no official upstream apt repository/ppa, but there is a package in debian experimental (an unofficial but often outdated ppa for ubuntu exists as well, but there's no v0.5.0 in the stable repository). You can also grab a self-contained binary (an appimage) from https://github.com/neovim/neovim/releases/download/v0.5.0/nv... and then rename it to "neovim", mv it to /usr/local/bin, and chmod +x.
Kessler Syndrome is not really an issue at lower LEO, the atmospheric drag quickly (in ~5 years) deorbits anything without functioning propulsion and navigation systems.
AstraZeneca has not been approved in the US because of potential blood clot risks.
Nearly 2 billion people have been vaccinated against COVID-19, including >150 million people in the US, and hundreds of millions in the EU. There are very few adverse reactions, and no deaths. The risks of COVID-19 injury and death are far higher.
Still, many people don't have proof that they actually had covid-19, some have falsely identified the symptoms of other infections as covid-19, and getting the vaccine will still boost the immune response for an extended period of time. Just get the vaccine, it's not hard.
There's about 50 million kids under 12 in the US, so while that percentage looks small that's still ~150,000 kids going to the hospital. I believe the real percentage is probably a bit lower due to underreported infections, but it's worth remembering that even small percentages can have huge effects in a country with hundreds of millions of people.
The plan for the first test flight is to aim for a controlled water landing, but the odds of that being completely successful aren't high enough to risk a land landing. The new drone ships are still under construction: https://spaceexplored.com/2021/07/07/update-on-spacexs-gulf-...
"Docker for Mac" and "Docker for Windows" generally spin up a local Linux VM to run containers, but all of the containers run inside a single VM. (I'm going to gloss over running Windows containers on Windows, which I believe operate more like Linux containers do on Linux).
No. A container shares the same kernel with the host OS. It doesn't do any of its own hardware setup. At most the host kernel will create some virtual network interfaces and create a filesystem for it. The container's processes are the same as other processes on the host OS, just with some special accounting flags that govern how many resources they get and what they're allowed to see from the host.
A VM host creates a guest environment with a bunch of virtual hardware devices and starts up the guest's kernel that talks to them through its own drivers. The guest does its own hardware initialization, formats and mounts its own block storage devices, does its own bootup and process scheduling, etc.
In Zulip you can make a "general" topic thread, and then move messages to a new topic when you feel like it's warranted. The normal stream (channel) view shows all threads simultaneously. There's also a view of all streams combined. The UI would be more confusing if Zulip had to display un-threaded messages, because then you wouldn't have a way to view only un-threaded messages without threads being interspersed. If you use the "general" topic method you can just focus on that.
I believe I was recalling another video tour, probably from last year, where they said "And this is where the assembled rockets will be stored" and the factory floor was empty. It's pretty cool that they've made so much progress since then!
I think it's viewed as wasteful because it doesn't actually get people into orbit, AND it is expensive. Thus, it's only really appealing to rich people with cash to burn. These vehicles aren't even stepping stones to orbital rockets, and orbital launch prices are dropping. It's much more likely that SpaceX will offer tickets to orbit for $25k in the next 5-10 years than it will be for Virgin Galactic to do so. Blue Origin at least has an orbital rocket in development, but who knows if/when it'll even start being fabricated.
Hey, in case you aren't aware, it sounds like you might be depressed. I highly recommend finding a therapist, or if you can't, consider what would need to change in your life for you to feel more active and engaged. Are you eating/sleeping/exercising too little or too much? Is your job/commute/locale draining you? Do you feel like you just need to find a direction/purpose? There's no other soul out there that would take your spot, and even if one could they'd face the same challenges as you.
Ahhh, I remember the good old days of forums where people would "hotlink" an image into a thread, and after enough people started viewing/forwarding that link around it would break because the image hoster's account would get suspended by their host for going over their bandwidth limit, or the original hoster would panic at their bandwidth costs and delete it and/or try to block hotlinking going forward. Maybe something like IPFS could solve this problem soon, but right now freely available image hosting on these centralized providers is the most reliable it's ever been.
Actually I think restaurants were doing that in some cases to make up for the cut Doordash was taking from them, so now instead the cost should be reflected in the fees to user (theoretically)
Judging from the end of this comment chain, the SPARC reactor from Commonwealth Fusion Systems (targeting ignition in 2025) will likely be around the ITER Target on that plot:
FWIW, I believe the guidelines do not recommend wearing a mask while exercising outdoors. I think partially because you're moving relatively quickly and partially because it's not very practical.
Starship already requires in-orbit fueling to fully refill its tanks for the outbound journey to Mars when loaded to its 100T payload limit. It cannot carry additional fuel to accelerate and decelerate another 100T+ of water shielding. SpaceX currently plans that Starship will return to Earth from the Martian surface without in-orbit refueling. I don't know the payload capacity for that trip offhand, but again water shielding would exceed the 100T mark and it would be an incredible amount of added complexity to do in-orbit refueling there with the limited fuel generation infrastructure.