UNIVERSE
LIFE IN THE SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The magnetic field of the Earth generates heat
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The ozone layer of the Earth warms the planet
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Earth has an intensely hot inner core
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Earth is in the habitable zone of the Sun
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Detailed explanation-1: -The distance Earth orbits the Sun is just right for water to remain a liquid. This distance from the Sun is called the habitable zone, or the Goldilocks zone.
Detailed explanation-2: -What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
Detailed explanation-3: -In our solar system, Earth sits comfortably inside the Sun’s habitable zone. Broiling planet Venus is within the inner edge, while refrigerated Mars is near the outer boundary. For larger, hotter stars, the zone is farther away; for smaller, cooler stars, it can be very close indeed.
Detailed explanation-4: -That’s because our planet sits in the “habitable zone” of our solar system. It’s far enough from the Sun so that all our water doesn’t boil away, but close enough so that it doesn’t freeze. One of the most exciting space discoveries of the past few decades is the existence of exoplanets, planets that orbit other stars.
Detailed explanation-5: -The overwhelming majority of it is frozen in its polar ice caps, and trace amounts of it can be found in the atmosphere. Liquid water only exists in small lakes below the glaciers at the poles.