zapatos

I guess it is not "off-topic" anymore...

You seem to have edited out the part I objected to.

Today I learned that there is no blue pigment in the feathers of blue birds. https://www.si.edu/stories/when-blue-bird-not-blue

I read once that the push for cleanliness in the home (at least in the US) came shortly after the invention of time saving machines such as washing machines, dryers, dish washers, vacuums, etc. Because women no longer had to spend endless hours cleaning high level dirt in the home, manufacturers saw an opportunity to give them something else to do to fill their days (Not a paying job of course!). Thus the focus on germs! Especially those nasty bathroom germs that will crawl to the baby food if you are not vigilant!

Yesterday I took a nice hike in a local nature reserve. About half way through I stopped and peeled a couple of tangerines, then accidentally dropped them on the ground. As a cursory inspection revealed no attached sand I proceeded to eat them. Delicious! And as of today I am still alive. 😃

Webb, like most satellites, was not designed to be serviced. Hubble on the other hand was designed to be serviced. One of the reasons it was not designed to be serviced is that they would have to first design a spacecraft to be used for that function.

Hmm. I took away the down vote as I couldn't see how it could be justified. I'm guessing the reader of your post somehow misinterpreted. I believe Webb only looks outward, away from the sun. The cameras on Webb would not only be impacted by the sun, but also by the earth and moon. Choosing L2 allows the sunshield to block out all of those from the camera. An article I found talked about the fact that only planets outside the orbit of earth could be observed by Webb. https://www.space.com/james-webb-space-telescope-science-overview Given the above, the only thing I can think of that the shadow of the earth would do to the satellite is have some impact on the solar panels. Since an orbit is around L2 is more stable than Webb being in a fixed spot, perhaps there is no significance to Webb being out of earth's shadow, and was only mentioned as a coincidence.

What I didn't see in your list of activities was physical activity. For me the greatest relief from stress, work or studying was to walk, exercise, play soccer, etc. Even at work I would never sit at my desk more than an hour without getting up and walking around.

While I agree to a certain extent, like in most matters there is no absolute. People will make judgement calls based on their unique set of circumstances and in some cases it may be best to censor medical information.

So, every politician, everyone seeking a promotion, everyone in advertising/sales/marketing, every interrogator, every spy, every military commander planning battles...

In what way? The type of discussion? Our belief in such things? Using god's killings as a model for ourselves? Inquiring minds want to know! 😃

I used the wrong type of faucet for an outdoor installation that is drained for the winter. Because of the faucet I used some water remained behind the faucet and froze, splitting the pipe about 12 inches from the faucet and not close to any other joint.

It's your experiment. I thought that is what you were going to tell us! 😁 We know water freezes and that -60F is cold enough to do so. We also know that ice can split copper pipes (I can personally attest to that.) The question seems to be whether or not the amount of spray you have can freeze the amount of water you have in the pipe. Also included are what contaminants are in the water, if any air is in the pipe, and if the pipe is sealed.

I wasn't questioning that. Only that "space is factually, measurably curved". I was just trying to clarify what you meant.

That's the first time I heard that. How do you measure space? You mentioned measuring the earth, and I know you can measure how things behave in space, but how do you actually measure space itself?

What was the question?

I know. That's why I started the post by saying "I know this is a tangent..."

I know this is a tangent, but I think you are wrong. You are the product of a specific egg and sperm. The time you were born is the ONLY time you could have been born in history.

I'm trying to understand it myself so this may not be correct but the descriptions I've seen make it sound like this to me. When the moon orbits the earth it is because the 'force' of gravity is in the center of the orbit. Similar to how a ball connected to a string will swing around in a circle. With a satellite around a Lagrange point, it is more similar to the way a roulette ball stays in a circle around the center of a roulette wheel since the wall around the roulette wheel contains the ball. It doesn't take much force to keep a ball circling a roulette wheel; the wall does most of the work and you just just need to add small pulse of force occasionally. Keeping a satellite exactly at the Lagrange point is compared to keeping a ball balanced on top of your head; it constantly wants to drift one way or the other.

How fast will Webb be traveling when it reaches L2? How will Webb begin to achieve an orbit that is perpendicular to the orbit of the planets about the sun? Is its motion away from the sun essentially halted as it begins its orbiting maneuvers? Are orbits around Lagrange points necessary to maintain position? Meaning, is it possible for a satellite like Webb to just 'sit' in the position around which it will orbit, instead of orbiting?

Perhaps I misunderstood. You are saying killing your father is impossible because time travel as it was described it is impossible? Not simply because killing your father would create some weird paradox?

Yup. You were right!

One way to prove the existence of galaxies is by looking, observing behavior, testing, reasoning.

Why? If we make the giant leap that time travel is possible, what keeps me from pulling the trigger?

I've never understood why paradoxes are an impediment to time travel. Not that I think time travel is possible, but I don't know why the possibility of me killing my father before I am born somehow interferes with whatever the mechanics of time travel would be. Seems just as likely that I would kill my father and something unexpected would happen somewhere. Surely the universe doesn't care that we don't like paradoxes.