Why We Don't See Stars from a Plane

Hello friends,     If you’re on an overnight flight, you might have been looking forward to a gorgeous, Clearview of the stars. That’s the whole reason you booked that window seat, right? But when night falls, you look out your window, and…no stars! They’re obviously still there…so what’s going on here?? 


     Well, there are a few reasons and I’ve got them.

1.   The Lighting in your cabin Obviously, the yellowish-whitish light in your cabin isn’t natural light, and there are rows and rows of these lights from the front to the back of the plane. Plus, other passengers may be watching an in-flight movie. In other words, it’s brighter inside the plane than it is outside. No matter how dim the lights might get as they’re turned down around bedtime, there are enough of them to make it difficult to see the stars – which, keep in mind, are still quite a few miles away.

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2.   Light Pollution Similarly, when you’re flying over a huge city like New York, London, or Tokyo, the stars still have to compete with all of those artificial lights from the cities. This concept is called light pollution. It might seem crazy to think that man-made lights will block out the light of millions of stars, but the stars are much further away than those glowing city lights below.

Night Pollution

3.   Skyglow A lot of light pollution, like the kind you'll get flying over a big city, can cause skyglow. Even if you aren’t flying directly over it, you can still see a big city to the left or right of you from a plane. Of course, even a big city will seem small from a plane, but there can be a huge glowing atmosphere around and above the city from all the lights. That’s what skyglow is, and it’s bright enough to block out even the light of the stars. 

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4.   The Moon and its Light, Even if it’s a clear night and you're above the clouds, the moon may be shining so brightly that its light will block out the stars. The moon still blocks the light of some stars when you’re stargazing from Earth. Even if you can’t see the stars from your plane, take the opportunity to enjoy a beautiful, unobstructed view of our moon.

Moonlight

5.   Proximity to the Stars, It might feel like you’re much closer to the stars while up in your airplane, but in terms of miles and light-years, you aren't really that much closer. After our moon and the sun, the star that’s next closest to the earth is called Proxima Centauri, and it’s 4.24 light-years away. 1 light-year is 6 trillion miles. When thinking in terms of numbers that big, if your plane is only somewhere around 35,000feet off the ground, you’re not that much closer to the stars than you are from Earth anymore. Disappointing, I know!

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6.   Atmospheric Turbulence Simply put, atmospheric turbulence is irregular air currents that are mixed around by the wind. Besides making your flight bumpy, this turbulence also stirs the air, which can move gasses, smoke, and vapors around the sky. This keeps these substances from settling in one air pocket and keeps the atmosphere healthy, but my point is that turbulence may bring in clouds, even on a clear night, which will block your view of the stars. Pay attention to see if it’s windy; if so, this may cause turbulence and bring the clouds rolling in. Yeah, stick your head of the airplane to see if it’s windy…ha..never mind.

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7.   Your Retinas, The retina is the part of your eye that processes light. If you have any pre-existing conditions, such as diabetes, or have had any head trauma, your retinas may not work properly, and you may not be able to see the stars. Even healthy retinas need normal oxygen levels in the blood to work properly. Although the cabin will maintain pretty normal oxygen levels at a high altitude, any of these pre-existing conditions, or less than perfect retinas, may affect your ability to see the stars from your plane.


8.   We Don’t Have Night Vision Well, at least not right away. There are other parts of your eyes besides your retinas that help you see in the dark, and your brain has to do some work, too. It takes us 10-20 minutes for our eyes to acclimate to the dark. So if you’re trying to see the stars from your plane and can’t, don’t give up too quickly! If you’ve eliminated the light sources inside the cabin, whether by using your blanket or getting the cabin lights turned off, keep stargazing for at least 20 minutes. You have to give your eyes time to adjust.

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9.   Your Windows, The windows of an airplane are oddly shaped and on the small side, only reaching from about shoulder to elbow; not ideal for stargazing. The cramped nature of the seats makes it difficult to look out your window from multiple angles too. You’d have to do a lot of neck-twisting! Airplane windows also have three layers of protection against the outside, so you stay safe. Anyone of these panes may be scratched up or cloudy due to age. The shape and condition of your window may affect the quality of your view of the skies. It might be hard to get this near-perfect conditions. 


     So, it has to be a clear night. The moon needs to be dim. Your cabin has to be dark. You can’t be flying over any big cities that may cause light pollution or skyglow,etc., etc. It could be difficult to get all of these elements to line up at the same time! Most of these conditions are out of your control, like all the natural elements outside. But if the right circumstances fall into place, your chance to stargaze above the clouds just may come along. So what CAN you do to increase your chances of seeing the stars from your flight? It might be difficult to see the stars, but it isn’t impossible.

    First, don’t do this during the day. Just kidding. Okay, Assuming that it’s a clear night, one option is to cover your head and sides of your face with your travel blanket. The goal here is to block out all the unnatural light from inside the cabin. Then, lean toward the window until you can see out, but the sides of the window are bordered by your blanket too. You might get some curious glances, but you may be able to do a little stargazing from your plane. 

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    Next don’t do this from the middle or aisle seat. The folks won’t take it too kindly if you flop over onto them to gaze out the window. You could also try asking the flight attendants if they could shut off the cabin lights fora minute or two. This would help make it almost as dark inside the cabin as it is outside. Without some elimination of the lighting inside the cabin, you won’t be able to see the stars at all. But, if you’re flying over an area with no skyglow or light pollution, and the lights are off in the cabin, you should be able to see some stars once your eyes adjust.


    Hey, It can’t hurt to ask! Some food for thought: in the early days of air travel, like in the ‘30s and ‘40s, pilots didn’t have all the technology on the flight deck that we have today. So how did they successfully navigate? They used the stars, or celestial navigation – similar to how sailors did! It’s much easier to see the stars from the larger and cleaner window in the cockpit. In the old days, the North Star and the constellations were tools of the trade! Seeing the stars from your plane is not only possible, but it used to be absolutely necessary! What’s that you ask, where are the best places to stargaze from an airplane?

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    Obviously, the view from the bathroom isn’t good, so like I said try a window. If you’re doing some nighttime flying over Idaho, Utah, Colorado, or British Columbia, you just might be in for the sight of a lifetime. These parts of the U.S. are homes to many protected national parks and nature reserves, so there’s no danger of light pollution or skyglow. Skies tend to be pretty clear and cloudless in these places, too. If you’re flying over British Columbia during the wintertime, you might be lucky enough to catch a glimpse of the Northern Lights! Kinda depends on what side of the plane you’re on.

   So hey, if you learned something new today, then please share this article with your friends and family. And please let me know in the comment box, how is it.

Why We Don't See Stars from a Plane:

Should You Shut Down Your Computer Every Night?

   Hello friends, In this article, I am going to write an interesting topic on "Should you shut down your computer every night?" Really this is an interesting topic and after reading this article on "Should you shut down your computer every night?", you will easily understand and solve your confusion. And in the end, there is a video on this topic from Brightside, please watch the video for better understanding. So let's start...


     You probably heard that turning off your computer for the night can be harmful to it. But you must’ve also heard the conflicting point of view that you actually should turn it off when not using it for long. So what’s the right thing to do then? Well, turns out there are several answers to that.

     The belief that your desktop should work all the time comes from the dawn of the computer era— the 1980s. Back then, computers were made of different materials, and frequently turning them off and back on could potentially damage them.
    Today, there’s no such problem, and you can freely switch your desktop or laptop on and off without much harm. Still, when you turn on your computer, it triggers a little power surge that creates some stress on the system. It isn’t likely to be hard on your electricity bill, but it could still cause some inconvenience.

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      Others argue that when your device is shut down, it saves more energy than you spend when it turns back on with that surge. So the situation seems dubious at best. It becomes clearer when you realize that modern computers, be it laptops, desktops, or tablets, are specially designed not to be turned completely off. Engineers have taken note of how inconvenient it is to close all the apps you have running, save and close all your work, and shut down, only to wait until the device boots when you switch it on again.

      If you have a solid-state drive, it might be fast, but with a conventional hard disk drive, boot-up could take a lot of time, especially if it’s old. Many of the computer parts have moving parts of their own, and they need time to get up to speed.
    When you shut down your device, it first closes all the programs running on it for all users. That means all the documents you were working on will have to be opened again, and those two dozen tabs in your browser will close too. Modern browsers allow you to begin where you left off even after a shutdown, of course, but that’ll still require some time. 

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     When everything’s closed, the computer turns off all that’s left and clears its running memory. It sweeps all the bits and pieces of programs, leaving your system spick and span. This allows it to perform better next time.

     If you don’t turn it off, many programs will leave traces of themselves that are going to accumulate, slowing down your system. So it’s either shut down the computer and wait until it boots up again or leave it on, like, forever, right? Nope.

      There are several things you can do as well. They are hibernation and sleep mode. Both of them allow you to leave your computer on and save your work while reducing energy consumption. You can access them from the Power settings both on Windows and Mac. Sleep mode conserves energy a bit worse than hibernation, but it allows your computer to start up almost immediately. It puts everything that’s opened on your device into RAM, or random-access memory, which is responsible for current activities on the PC or laptop.

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      When a process is within RAM, it means you can access it right away and it won’t need time to load. Then your device goes to power-saving mode and pauses all activity. To exit this state, just press a key or click your mouse, or pop your cheek like this [pop]no that won’t work – just kidding. Your computer will come alive again. On some systems, though, you may need to press the power button instead.

     Hibernation is a deeper sleep mode that doesn’t use any energy at all, just like when you shut it down but takes more time to shake off. In this state, your computer copies everything you have opened to the hard drive instead of RAM, and only then falls into a slumber. Like I said, hard drives have moving parts that need to gain some spin before you can use them, that’s why your computer is slower to wake up from hibernation.
    If you have an SSD, though, you shouldn’t even notice the difference from sleep mode, since it boots up much faster. Take note that in the more recent systems there’s no obvious choice between sleep and hibernation when you click the Power settings. You can check which one your device is using by going to the system settings.

     On Windows 10, you can only use sleep mode by default, and to add hibernation you'll need to open the taskbar and type power options. Click on the first control panel that pops up and select Choose what the power buttons do on the left-hand panel. Next, click Change settings that are currently unavailable.In the Shutdown settings at the bottom of the screen, tick the box next to Hibernate.


    On Mac, you’ll have a different default mode for desktop and portable computers: sleep mode for desktops, and hibernation for laptops. Both have been chosen for better performance, so you don’t need to change them. You can still do that, though, but it will require administrator rights and tampering with the system, so use this option at your own risk.

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      I don’t want you to end up with a computer that doesn’t wake up anymore, so no, I won't tell you about that. On Mac laptops, there’s also an option to enter a standby mode. The device will automatically enter this state after three hours of sleeping if there nothing connected to it, including the charger. It’s convenient because it will conserve energy for up to 30 days if everything’s perfect. It still uses some charge, though, so don’t hold it for too long. With that many options to choose from, shutting down your computer at all may seem redundant, but it’s not. 

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     Remember I said that, upon shutdown, the machine clears the memory? If you don’t do that from time to time, you’ll get stuck with a slow and sleepy device at some point. Programs it runs all the time will leave a lot of trash under the hood. They will take up important space and prohibit other stuff you run from accessing it.That game you launched a couple of days ago will leave little bits of data to help you start it faster next time, but if you run another program, it might need the space the game has taken. It will eventually find where to save its own data, but it’s going to take more and more time the longer you keep your computer turned on.

      Shutting down the device will solve the problem in most cases. But keeping your data safe while your computer is on is tricky because there can be power surges or outages. It’s mostly okay for laptops since they simply switch from plugged-in mode to autonomous mode, but if you own a desktop computer, you’re in for an unpleasant surprise when you come back. Make sure to buy a UPS, or Uninterruptible Power Supply, to save you from headache in case of a power outage.

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     UPS is a device that will provide an emergency power load to your computer if the mains power suddenly isn’t there for some reason.Sounds like a generator, but unlike one, a UPS turns on almost instantly, so your device won't forcefully shut down. On the downside, it only has a charge for several minutes, so you’ll have to be quick to turn off your computer yourself. Or, if you do have an auxiliary generator, it will have enough time to switch on to save you the trouble.

   Hey, I hope you understand well and learn something new if you learned something new today, then please share it with your dear & near ones. And please let me know in the comment box, how is it.