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Planet Mercury: Fast, Pockmarked and Shrinking
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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?
The Mysteries of Mercury Retrograde Unveiled: A Cosmic Phenomenon
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Unlock the mysteries of Mercury Retrograde, its impact on astrology, and how to navigate its cosmic waves for personal growth.
Terrestrial Planets Are the Rocky Planets of the Solar System
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Terrestrial planets include the four closest to our sun, including Mercury, Venus, Earth and Mars. What else makes these celestial bodies terrestrial planets?
Why Is Pluto No Longer Considered a Planet?
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On Aug. 24, 2006, the International Astronomical Union (IAU), an organization of professional astronomers, passed two resolutions that collectively revoked Pluto's planetary status.
Exploring Jovian Planets, the Titans of Our Solar System
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The four Jovian planets are officially designated as gas (and/or ice) giants. Which planets are they and what makes them so unique?
Exploring the Outer Planets of the Solar System
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Explore the mysteries of the outer planets: Jupiter, Saturn, Uranus, and Neptune. Dive deep into their atmospheres, moons, and unique phenomena.
What Are the Solar System Planets in Order?
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You know Saturn and Venus and Mars. Can you put the eight planets of the solar system in the correct order? There are several ways to do this.
Who Named Planet Earth?
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All of the planets in the solar system are named for Greek gods, except Earth. So where did the name come from?
Is Earth the Only Planet With Tectonic Plates?
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Some scientists think plate tectonics could be a prerequisite for life. So do they exist on other planets outside of Earth? HowStuffWorks finds out.
How well do you know the planets in our solar system?
play.howstuffworks.com/quiz/how-well-do-you-know-the-planets-our-solar-system
The cosmos is an expansive, complicated place that often inspires more questions than answers. There is still a lot we do know about the planets in our own solar system, but just how much do you know? Find out what you know about our cosmic neighborhood with this quiz!