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Planet Mercury: Fast, Pockmarked and Shrinking
science.howstuffworks.com/46004-mercury-explained.htm
Mercury is the closest planet to the sun, and it's the smallest in the solar system. So why does it have longer days than we have on Earth?
Neptune: An Ice Giant With Diamond Rain
science.howstuffworks.com/46006-neptune-explained.htm
Neptune is the eighth planet from the sun and one of the coldest. Its supersonic winds are also the fastest in the solar system.
Exploring Mars: Insights Into the Red Planet
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Since the 1960s, we've been captivated by the planet Mars. How different is our neighbor, and what have we learned about the most explored planet?
The Truth Behind the Rogue Planet Nibiru
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The idea of planet Nibiru, sometimes dubbed Planet X, has captivated doomsday prophets and conspiracy theorists for decades.
Gliese 581c: The First 'Earth-like' Planet Found
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Gliese 581c was one of the first "Earth-like" planets found, back in 2007. It generated a lot of excitement then but what about now?
Which Planets Are Considered 'Earth-like' and Why?
science.howstuffworks.com/other-earth.htm
Exoplanets are planets that orbit stars other than our sun. Read about exoplanets and find out how scientists are searching for exoplanets with life.
Ploonets: When Moons Become Planets
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Moons of giant planets outside the solar system may be pushed out of their orbits and begin to circle their stars separately. HowStuffWorks takes a look.
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.
Do the Planets Ever Actually Align?
science.howstuffworks.com/planetary-alignment.htm
If you imagine the eight major planets in a single line stretching out from the sun, this alignment occurs roughly every 13.4 trillion years. And our solar system is 4.5 billion years old.
10 Earth Day Activities to Celebrate Our Planet
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Earth Day is the ideal time of the year to form new eco-oriented habits. Here are 10 things you can do to celebrate our planet all year long.