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terrestrial planet
A small planet of high density with a solid, rocky surface. The terrestrial planets in the solar system are Mercury, Venus, Earth, and Mars. The first terrestrial planet to be found orbiting another star is OGLE-2005-BLG-390Lb.
Related entry
• Earth-class planet
Related category
• PLANETS AND MOONS
• ASTROBIOLOGY
Archived news
Many, perhaps most, nearby Sun-like stars may form rocky planets (Feb 17, 2008)
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