Facts about this:

1. Bags, with contents, were left on board the lower descent stages of the lunar modules. They remain on the moon to this day.

2. There was at least one incident on Apollo 10 where feces escaped and was floating around the cabin.

Part of the radio transcript:

Within section 2.1 choose only one subsection to follow. Those are all alternative bootloader options.

The bootloader subsection chosen in 2.1 on this page should match what is done in Configuring the Bootloader. The default path on that page is GRUB, which does not require any systemd components.

If following the GRUB path, follow instructions in 2.1.1 and skip the rest of 2.1. This is not at all clear in the handbook.

I believe that sys-kernel/installkernel is a utility script internal to the Gentoo project that can be configured to work with various bootloader solutions, including (optionally) systemd, and that is what this section 2.1 is talking about.

This appears to be an out of order dependency in the handbook

Violates CERT C ENV33-C.

The worst is when one of the two questions is an open problem.

Windows was never oriented around “just works”. That was Mac. Windows’s main selling point is that it never becomes incompatible, and that has largely stayed true. You can still to this day insert the disk for some proprietary application from Windows 2.0 and it will still install and run. Try that with another operating system!

At ISS altitude, it’s probably not decades to decay, but a few years instead.

Rockets do not aim straight up when they are leaving. They go straight up for a few seconds, and then they tilt over in the desired direction to pickup speed.

They don’t burn up on the launch because they time the tilt over maneuver so that they get above nearly all of the atmosphere before they start picking up serious speed.

The energy that makes you burn up is your own kinetic energy. The “small” deorbit burn slows you down just enough to touch the atmosphere, but you’re still going nearly full speed: 7200 m/s. Around 30,000 km/hr.

If you slow down more in space, so that you enter the atmosphere at low speed, you don’t burn up. But you need a whole lot more backpacks to handle the full speed. It’s cheaper and burns less gas if you use the air to slow down.

It seems difficult to have enough bottled oxygen to deorbit yourself, but maybe doable.

The MMU backpack units on the space shuttle had a total delta v of ~30 m/s. You need about three times that amount to deorbit from ISS. So imagine you need 3 MMUs give it take worth of expendable propellant oxygen, and you can do it. (The MMUs used nitrogen, but for this purpose oxygen is pretty much the same.)

After you deorbit, you will of course burn up on re-entry with no heat shield. But it might be conceivable to design a personal heat shield surfboard.

You could also avoid the whole burning up things by braking a lot more during the deorbit maneuver. But instead of 100 m/s, you need to slow down by more than 7000 m/s. That’s quite a few more MMUs worth of gas. But if you do that, then you’re essentially making a free fall jump from space, which has more or less already been demonstrated.

Edit:

To address the linked article in some way: each astronaut on the station has a dedicated seat on a capsule to come back down in an emergency. Usually, it’s the same space capsule you came up on, but not always. Those are maintained ready to go at all times, and the astronauts can be back on the ground in 60 minutes whenever they need to. These spacecraft can be operated to splashdown by astronauts alone with no ground assistance, if needed.

No. For several reasons.

Fortran is older than Basic and C. In fact, Fortran is more or less the first high level programming language. The first Fortran compilers date to the early 1950s.

Fortran was created mainly for the purpose of linear algebra: operations with (giant) matrices. Linear algebra is used to compute approximate solutions to ordinary and partial differential equations, and this is a major part of what people needed computers for (and still do).

Programming concepts like subroutines, functions, if statements with blocks and else clauses… All of those were not in original Fortran because no one had thought of them. These things entered Fortran over time as they became popular, and goto slowly became less popular. Syntax from the punch card era was replaced in Fortran 90, but it is still available as an option for compatibility purposes.

Structurally, I prefer to describe Fortran as like C, but with better built-in arrays, and no built-in general purpose pointers. Not having the pointers allows the compiler to do certain optimizations that C can’t. But C is the better systems language, because the pointers let you naturally express all kinds of data structures besides arrays.

Better known for other work.

I do like me some salami on toast.

Medical device programmers:

Also, on Gentoo Linux, there will be an ebuild that integrates all of the cmake options into the rest of the packaging system and manage the dependencies

I preferred the Facebook group “If 2,147,483,648 people join this group, then an integer overflow may occur” back in the day.

The ghost movement is not random. They go in memorizable patterns. So it is possible to simply rote memorize the solution to all 256 levels or something.

And for reference, the earth escape velocity from the surface is 11.2 km/s or 25,000 mph, not 7,000 mph.

To escape the solar system from the earth surface, the minimum speed is 16.6 km/s, or 37,100 mph. But this assumes that you launch in the correct direction to take the most advantage of the Earth’s 30 km/s. If you launch in the most disadvantageous direction, you can add another 60 km/s to escape.

And that’s why you should only drink grain alcohol and pure, natural rain water. To preserve the essence of your precious bodily fluids.

</s>

Not embedded (using Jerboa).

Like any other convention, it’s not really a big deal either way. Fortran gets along just fine with 1-indexing.