Name: 行星維持生命嘅條件
Uploaded: 2016-08-12T14:49:58Z
Duration: 13 min 32 s
Description: 行星科學家 Dave Brain 話「金星太熱，火星太冷，地球啱啱好」。但係點解？Dave Brain 喺呢場開心幽默嘅演講，講解咗行星維持生命所需要嘅幾項有趣科學條件，同埋點解人類喺地球上生活只係因為天時同埋地利。

Dave Brain: 行星維持生命嘅條件

行星維持生命嘅條件

行星科學家 Dave Brain 話「金星太熱，火星太冷，地球啱啱好」。但係點解？Dave Brain 喺呢場開心幽默嘅演講，講解咗行星維持生命所需要嘅幾項有趣科學條件，同埋點解人類喺地球上生活只係因為天時同埋地利。

Our planet is the only known place in the universe where 8.7 million species thrive, thanks to a rare balance of energy, nourishment, and liquid water. Even within our solar system, only Venus, Earth, and Mars once had a shot at surface water, but Earth's stable conditions set it apart. Planetary atmospheres and magnetic fields play crucial roles in protecting or stripping away the ingredients for life. With billions of potentially habitable planets in our galaxy, understanding Earth's unique story could reveal which distant worlds might also sustain life.