What factors determine the boundaries of the habitable zone around a star?
What additional factors are necessary for a planet to support life as we know it? (Select all that apply)
Which of the following planets is most likely to support life as we know it?
Which of the following would be the strongest evidence for life on an exoplanet?
What factors determine the boundaries of the habitable zone around a star?
What additional factors are necessary for a planet to support life as we know it? (Select all that apply)
Which of the following planets is most likely to support life as we know it?
Which of the following would be the strongest evidence for life on an exoplanet?