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Why Are Planets Almost Spherical?
science.howstuffworks.com/why-are-planets-almost-spherical.htm
None of the planets in our solar system are perfect spheres, nor for that matter is our sun. Learn more about oblate spheroids at HowStuffWorks.
The Ultimate Astronomy Quiz
play.howstuffworks.com/quiz/astronomy-quiz
Though the astronomy field has evolved from its primitive beginnings, there's still a boundless cosmos to explore. Test your astronomy knowledge with our quiz.
Is Light Matter and Does It Weigh Anything?
science.howstuffworks.com/light-weigh.htm
Seven ounces a ray! No, that's a lie. Measuring the weight of light is not as straightforward as that. So what's the more complicated explanation?
Why Is the Ocean Different Colors in Different Places?
Ocean water is not actually blue, but appears in different shades for many reasons.
Scientists Use LiDAR to Discover Massive Lost Mayan City
LiDAR made it possible to discover the remains of a massive Maya settlement hidden for centuries. HowStuffWorks looks at the technology.
In 'Star Wars' Entire Stars and Planets Get Destroyed — Is That Possible?
entertainment.howstuffworks.com/star-wars-starkiller-possible.htm
Could a planet or star ever be destroyed through man-made means, like in the 'Star Wars' series? Learn more about Starkiller Base.
Communicating With Aliens Is Hard. Communicating With Alien AI Could Be Harder
If you think about it, it'll likely be an alien machine that encounters our probes searching for intelligent life. How's that going to work?
How the Metric System Works
science.howstuffworks.com/metric-system.htm
Ever heard of a little unit called a femtometer? Can you tell us how much you weigh -- in petagrams? We know you can't, so hurry up and start reading. We have work to do.
How Space Wars Will Work
science.howstuffworks.com/space-war.htm
Weapons in space that can knock down missiles have been under development for years and are starting to look realistic. Learn how they will work!
What's sarcopenia and what can you do about it?
health.howstuffworks.com/wellness/aging/aging-process/sarcopenia.htm
Sarcopenia is the loss of muscle mass and coordination that results from the process of aging. See the causes of sarcopenia and how it can be avoided.