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Your search for "terrestrial planet" returned 90 results
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?
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?
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 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.
NASA Announces New Solar System Packed With Seven Planets
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NASA announces a discovery of seven nearby Earth-sized planets. Learn more about the TRAPPIST-1 planets in this HowStuffWorks Now article.
Which Planets Are Considered 'Earth-like' and Why?
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Exoplanets are planets that orbit stars other than our sun. Read about exoplanets and find out how scientists are searching for exoplanets with life.
The Solar System: Planets and Formation Explained
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While we generally picture the sun and planets when thinking about our solar system, it also consists of comets, asteroids and hundreds of moons.
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 Basic Astronomy quiz
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The night sky has fascinated humans throughout history. Even if you're not a science buff in general, we're willing to bet you know a thing or two about astronomy yourself. Find out just how much with our quiz!
Neptune: An Ice Giant With Diamond Rain
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Neptune is the eighth planet from the sun and one of the coldest. Its supersonic winds are also the fastest in the solar system.