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What is cosmological redshift?
science.howstuffworks.com/cosmological-redshift.htm
Cosmological redshift: sounds like the latest blockbuster coming to a theater near you, doesn't it? In reality, it has to do with how light itself travels -- and understanding how it works is essential to advanced space telescope technology.
What If There Were No Stars?
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Assuming we got to keep the sun, how bad would be for travelers to not have these little guiding lights? And what else might have changed in history without stars?
Sonification: Listening to the Haunting Sounds of the Universe
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Sonification is the process of taking data and turning it into sound. When it come to the universe we live in, scientists are finding that the sounds are definitely otherwordly and very beautiful.
How Instant Film Works
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Before digital cameras, you needed instant film to get instant pictures. With instant-film photography, you can watch the image slowly come together in a matter of minutes. While it seems like magic, the process relies on elements of science. Find ou
Shooting Star Meaning, Spirituality and Superstitions
science.howstuffworks.com/10-superstitions-about-stars.htm
These days, we may take the stars for granted, but it's not hard to imagine the wonder early humans must have felt gazing up at those inexplicable points of light. Naturally, superstitions were bound to develop - some more fortuitous than others.
How the Sun Works
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The sun warms our planet every day, provides the light by which we see and is necessary for life on Earth. Learn about the sun.
How Stephen Hawking Worked
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He ventured to the abyss of black holes, wagered on the information paradox and floated around in zero gravity. Meet the man, the legend, the super scientist: Stephen Hawking.
Just How Many Galaxies Are in the Universe?
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Galaxies are large systems of stars, gas, dust and dark matter that orbits a center and is bound by gravity. Learn about the characteristics of galaxies.
How Hair Coloring Works
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Got a few grays? Just want a new look? Well, if you are like 75 percent of women, you're part of a billion dollar industry. Learn all about hair coloring and choosing the best color for you.
How Sunglasses Work
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Whether you're hitting the surf or the slopes or just spending a day on the lake, sunglasses are a must-have accessory. Find out if the $10 sunglasses are as good as the high-cost ones.