Title: How many planets in our universe could support life? | HowStuffWorks
Headings: How many planets in our universe could support life?
How many planets in our universe could support life?
Citation

Content: The Planet on a Very Tilted Axis
Science > The Solar System > Ploonets: When Moons Become Planets
Science > Astronomy Terms > Planetarium
Science > Space Exploration > 10 Remarkable Exoplanets
Science > Space Exploration > Closest Exoplanet Yet Confirmed By European Southern Observatory
Science > Stars > Spotted: Early Planetary Formation Around a Binary Star System
Science > Stars > This Is How We'll Detect Life on Distant Exoplanets
Science > Space Exploration > NASA's Kepler Mission Adds 100 Alien Worlds to Exoplanet Tally
Science > Space Exploration > Can amateur astronomers spot exoplanets? Science > Future Space > 10 Best Ideas for Interplanetary Communication
Science > Space Exploration > LISA: Detecting Exoplanets Using Gravitational Waves
Science > The Solar System > How NASA Planetary Protection Works
Science > Astronomy Terms > Planetesimal Hypothesis
Entertainment Planet Research
Entertainment > Memorable Movies > In 'Star Wars' Entire Stars and Planets Get Destroyed â Is That Possible? ​
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Kate Kershner     "How many planets in our universe could support life?" 22 September 2014. HowStuffWorks.com.