why does the sky look black from space

why does the sky look black from space

The color of sky is no different than the color of grass, milk, trees etc. Two basic kinds of light we perceive: direct light and reflected light. Direct light is only seen when it is perceived directly by our eyes. All other light is reflected from something. In the case of grass, milk, trees, it's obvious. In the case of the sky, we perceive the light after it has been reflected from things that are present in the atmosphere such as gases, vapor, dust. and, of course, the air itself. And all of those things serve to diffuse the light as well. Nothing has a completely clean edge, it's always got a blurry boundary, if you look closely enough at it. Where there is nothing to reflect from, there is no color. No light. No blurry edges. In the case of sky, our atmosphere does not suddenly

 why does my computer keep shutting off by itself

why does my computer keep shutting off by itself

Why does my computer turn off without warning? This document is for computers that turn off and remain off after an extended period of use. It is not for, or. Some of the steps below require you to work inside your computer. Before opening your case, be aware of the dangers of. Most computers today are designed to turn off automatically if any of its inner components overheat. Often, heat related issues occur when the computer is working hard, e. g. , playing a graphically intense computer game. Start by verifying the fan on the is working by examining the back of the computer. The fan should be moving quickly and smoothly. All other in the computer require you to to inspect them. Once you have access to the inside of your machine, examine the processor ( ), and. If you have heard any

 why does the government keep secrets about aliens

why does the government keep secrets about aliens

Technically Incorrect offers a slightly twisted take on the tech that's taken over our lives. Trusting the government isn't the easiest of things for a lot of people. They know that, years later, certain truths emerge that appear mightily like the opposite of what the government was telling us at the time. So when many speculate about Area 51 and other places where aliens might be being kept against their own will, they feel sure that the government knows and it doesn't want to admit it. Bill Nye insists this isn't so. , the Science Guy, a label coined by Nye's 1990s show of the same name, made a simple case. "Just think how hard it is for the government to keep anything secret," he said. He added that the government "kinda sucks" at secrecy. Indeed, this is an era in which a former

 why does my kidneys hurt when i drink alcohol

why does my kidneys hurt when i drink alcohol

Hi, Apologies if this is in the wrong area or not appropriate, I appreciate this forum may typically be for folks more advanced into their kidney problems but this was where Google directed me. Please advise if so. Over the course of the last 3 or 4 months I ve noticed an increased kidney ache the day after I ve consumed a large quantity of alcohol. The pain would only last as long as my hangover, i. e. the day after. At the time this wasn t of particular concern and I simply put it down to the excess drinking alone without worry. However at home last night I consumed a single casual pint of lager and noticed that my kidneys immediately started hurting. The pain lasted through the night and I am still aware of it this morning. I am particularly concerned given that a) the aching started

 why does the f key have a bump

why does the f key have a bump

Why are there bumps on the F and J keyboard keys? The small bumps or ridges found on the F and J keys on a computer keyboard are to help users correctly position their left and right hands without having to look at the keyboard. For example, without looking at your hands, you can feel the correct position of your left index finger on the F and the right index finger on the J by feeling the small bumps on the keys. ...

 why does my new computer run slow

why does my new computer run slow

Hi, This issue can be caused by any of the below possibilities. Not enough hard drive space. Left over programs and bad files. Data Corruption. Missing Windows updates or outdated drivers. Computer is overheating. Corrupt OS. Bad Hardware. IF your computer has not been reboot recently make sure to reboot it before following any of the below steps. Verify that there is at least 200-500MB of free hard drive space. This available space allows the computer to have room for the swap file to increase in size as well as room for temporary files. Run ScanDisk or something equivalent to verify there is nothing physically wrong with the computer hard drive. Run Defrag to help ensure that data is arranged in the best possible order. Remove or disable any TSRs and startup programs that automatically

 why does my facebook news feed stop

why does my facebook news feed stop

My news feed isnt scrolling anymore. It only shows 3 to 4 posts and wont scroll any further down. Ive logged into Google Chrome, IE9, Firefox and Safari and all 4 do the same thing. Ive tested this on my other computers using Windows 7 and the Facebook Scroll bar is gone. So I took one of my computers install Windows 8 on it and tested and have the same issue so I can rule out it being a browser issue or computer issue. There is something wrong with my Facebook account that is not allowing me to scroll through the news feeds and read everyones posts. Please work with me on trying to resolve this issue. Ive done a Google search and found there are thousands of others trying to figure out how to fix the same problem. this problem is happening all over FB. there is NO support and no one is

 why does my head and eyes hurt everyday

why does my head and eyes hurt everyday

Headache pain is commonly felt in a variety of places on the head, including the temples, sinuses, forehead, and behind the eyes. Eye pain associated with a headache can be caused by a few different types of headaches, as well as other seemingly unrelated conditions. But regardless of the cause, this type of pain can be mild, moderate, or even excruciating. The purpose of this article is to explore the causes of headache pain behind the eyes and the treatment options available for this type of pain. Since eye pain result from so many different factors and conditions, it is important to have an accurate diagnosis of the problem so that it can be treated effectively. One of the most common reason that an individual feels pain behind the eyes is a tension headache. This type of headache

 why does my knee cap pop when i bend it

why does my knee cap pop when i bend it

and treatments for joint pain are available at drugstores, health food stores, and online. This includes, and boswellia serrata. Just keep in mind that few have been proven clinically effective. , especially, is a common treatment for arthritis. , which is rich in and other nutrients, may be useful as well. Both are available in tablet or capsule form. Find a great selection of fish oil. Certain may soothe arthritis pain. are proven to provide effective relief. also is an excellent way to ease pain and may promote healing. Healthline and our partners may receive a portion of revenues if you make a purchase using a link above. ...

 why does my poop smell like metal

why does my poop smell like metal

Feces normally have an unpleasant smell. Foul-smelling stools have an unusually strong, putrid smell. In many cases, foul-smelling stools occur due to the foods people eat and the bacteria present in their colon. However, foul-smelling stools can. Feces normally have an unpleasant smell. Foul-smelling stools have an unusually strong, putrid smell. In many cases, foul-smelling stools occur due to the foods people eat and the bacteria present in their colon. However, foul-smelling stools can also indicate a serious health problem. Diarrhea, bloating, or flatulence may occur with foul-smelling stools. These stools are often soft or runny. What causes foul-smelling stool? Changes in diet are a common cause of foul-smelling stool. Additional causes include the following: Malabsorption is also

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