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What Is a White Hole? Does the Cosmic Phenomenon Exist?
science.howstuffworks.com/white-hole.htm
Black holes have long held the spotlight as celestial objects from which nothing, not even light, can escape. However, theoretical physicists propose a less understood but equally fascinating counterpart: the white hole.
Is there a speed of darkness?
science.howstuffworks.com/dictionary/astronomy-terms/speed-of-darkness.htm
Everyone knows that nothing travels faster than the speed of light, but how does the speed of dark compare? Read on to find out!
That Faint Light in the Night Sky Could Be the Gegenschein
science.howstuffworks.com/gegenschein.htm
The gegenschein, "faint light" in German, occurs under very specific astronomical conditions when the sun reaches the exact opposite of Earth from wherever you're stargazing.
How does a Crookes' radiometer work?
science.howstuffworks.com/question239.htm
I once saw this device shaped like a light bulb. It had a vertical support inside it, and on that support there were four vanes with four diamonds on the end. One side of the diamond was black and the other was white. I did a little research and found out that it was called a Crookes' radiometer -- how does it work?
12 Black Inventors and Their Innovations That Shaped the World
science.howstuffworks.com/innovation/inventions/10-inventions-by-african-americans.htm
When asked to name a Black American inventor, many people might think of George Washington Carver and peanut butter. But this is actually a myth. There are hundreds of other unsung Black inventors who have shaped the world with their innovations.
Are UFOs Real? Close Encounters of the First, Second and Third Kinds
science.howstuffworks.com/space/aliens-ufos/ufo-classification.htm
UFO siting classification Classification has six categories: nocturnal lights, daylight discs, radar/visual cases, and close encounters. Read more about UFO classification.
If you were to move all of the matter in the universe into one corner, how much space would it take up?
science.howstuffworks.com/dictionary/astronomy-terms/question221.htm
If you took all of the matter in the universe and you pushed it all into one corner, how much space would it take up? I am trying to understand how much of the universe is 'empty.'
What is the urban heat island effect?
science.howstuffworks.com/environmental/green-science/urban-heat-island.htm
Cities are often hotter than rural areas because of the urban heat island effect. Learn what an urban heat island is.
How Lasers Work
science.howstuffworks.com/laser.htm
Lasers are used in dental drills, eye surgery, tattoo removal, and (of course) laser pointers. Learn how different lasers generate such concentrated light.
How Blackouts Work
science.howstuffworks.com/environmental/energy/blackout.htm
Blackouts are explained in this article. Learn about blackouts.