Alien life likely can't survive on exoplanets smaller than Mars, scientists say

Alien life likely can't survive on exoplanets smaller than Mars, scientists say. For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as Mars.

A apuração publicada por www.space.com vira base para uma leitura editorial direta e contextualizada.

Trechos de apoio da pauta: A rocky planet orbiting in the habitable zone of a sun-like star may look like a perfect place for life to thrive — but not if it's too small to hold onto its atmosphere.So, we may wonder: How much smaller Earth could be and still have its delightfully breathable atmosphere? How small could an exoplanet be to sustain life as we know it?

• Ponto de atenção: alien.
• Ponto de atenção: life.
• Ponto de atenção: likely.

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