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1. science.nasa.gov › exoplanets › habitable-zoneThe Habitable Zone - Science@NASA

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   The definition of “habitable zone” is the distance from a star at which liquid water could exist on orbiting planets’ surfaces. Habitable zones are also known as Goldilocks’ zones, where conditions might be just right – neither too hot nor too cold – for life.

   • What Is the Habitable Zone? - NASA Science

     For a planet, the habitable zone is the distance from a star...

2. seec.gsfc.nasa.gov › what_makes_a_planet_habitableSEEC - What makes a planet habitable - NASA

   seec.gsfc.nasa.gov › what_makes_a_planet_habitable

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   A "habitable zone" is the region around a star where planets can receive the perfect amount of heat to maintain liquid water on their surfaces. Because Earth is in the habitable zone of the Sun, this arrangement has informed our understanding of habitability.

3. Videos

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4. science.nasa.gov › resource › what-is-the-habitable-zoneWhat Is the Habitable Zone? - NASA Science

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   Mar 10, 2021 · For a planet, the habitable zone is the distance from a star that allows liquid water to persist on its surface – as long as that planet has a suitable atmosphere. In our solar system, Earth sits comfortably inside the Sun’s habitable zone.

   • Credit: NASA/JPL-Caltech/Lizbeth B. De La Torre

5. www.planetary.org › what-is-the-habitable-zoneWhat Is the Habitable Zone? | The Planetary Society

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   Out of all the planets, moons, asteroids, and comets in our solar system, only Earth has liquid water on the surface and is capable of supporting life—at least as far as we know. That’s because our planet sits in the “habitable zone” of our solar system.

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6. earthsky.org › space › habitable-zone-world-exoHere’s what ‘habitable’ means to astronomers - EarthSky

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   Jan 29, 2024 · Based on our solar system, life requires liquid water, energy and nutrients. A ‘habitable zone’ is the region around a star where planets can receive the perfect amount of heat to...

7. www.space.com › goldilocks-zone-habitable-area-lifeGoldilocks zone: A guide to the habitable sweet spot | Space

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   Feb 16, 2023 · The habitable zone is also known as the "Goldilocks zone" because planets orbiting at that "just right" distance from a star are not too hot or too cold to...

8. People also ask

   What is a 'habitable zone'?

   • A ‘habitable zone’ is the region around a star where planets can receive the perfect amount of heat to maintain liquid water on their surfaces. So our Earth, for example, is habitable. It’s the only planet in the habitable zone of our star, that is, the only one of our sun’s planets where liquid water can exist on the surface.

   Here’s what ‘habitable’ means to astronomers - EarthSky

   earthsky.org/space/habitable-zone-world-exoplanet-definition/

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   Why does Earth have a habitable zone?

   • That atmosphere eliminates the possibility of life (as we would recognize it) on the planet's surface. Earth is squarely in the middle of the sun's habitable zone. Some researchers say that isn't a coincidence; after all, we created the idea of "habitable zones" to look for planets like ours.

   Goldilocks zone: A guide to the habitable sweet spot | Space

   www.space.com/goldilocks-zone-habitable-area-life

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   What is a habitable planet?

   • The standard definition for a habitable planet is one that can sustain life for a significant period; based on our solar system, life requires liquid water, energy, and nutrients. A "habitable zone" is the region around a star where planets can receive the perfect amount of heat to maintain liquid water on their surfaces.

   SEEC - What makes a planet habitable - NASA

   seec.gsfc.nasa.gov/what_makes_a_planet_habitable.html

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   Is Earth a habitable planet?

   • 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.

   What Is the Habitable Zone? - NASA Science

   science.nasa.gov/resource/what-is-the-habitable-zone/

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   Do stars have a habitable zone?

   • A star's habitable zone does not depend on the types of planets that are actually in the region. Gas giants are less likely to harbor life, according to NASA. So, in addition to searching for planets in stars' habitable zones, researchers look for worlds that resemble Earth in size, atmosphere or chemical composition.

   Goldilocks zone: A guide to the habitable sweet spot | Space

   www.space.com/goldilocks-zone-habitable-area-life

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   How do you know if a planet has a 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. Finding these “just right” planets in the habitable zone is one of the keys to finding signs of life.

   What Is the Habitable Zone? - NASA Science

   science.nasa.gov/resource/what-is-the-habitable-zone/

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9. science.nasa.gov › exoplanets › what-is-theWhat is the habitable zone or “Goldilocks ... - Science@NASA

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   The habitable zone is the area around a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planets. Imagine if Earth was where Pluto is. The Sun would be barely visible, and Earth's ocean and much of its atmosphere would freeze.