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Theia was about the size of Mars and orbited the Sun, nearly along the same orbit of early Earth. But around 4.5 billion years ago, Theia and Earth collided. And some of the resulting ejected debris gathered to form the Moon. One clue for this giant-impact hypothesis can also explain why ...

Did you know that billions of years ago, Earth was impacted by another planet called Theia that ended up giving us the Moon? 🇬🇧 Catch full episodes of your favourite Discovery Channel shows on discovery+: https://bit.ly/3KJGX99 Subscribe to Discovery UK for more great clips: ...

Une grande odyssée interstellaire a travers la galaxie a la recherche de vie extraterrestre sur d'autres monde. Documentaire exoplanète Arte 2020 HD Source

Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also could have brought alien life to our planet. What evidence of this planet still exists on Earth today? Could there be life deep inside the Earth’s surface? And could that ...

plusieurs méthodes sont actuellement utilisé pour tenter de capter un signal extraterrestre. Les spécialistes disent qu'on est a l'aube de pouvoir recevoir un signe venu d'ailleurs ... La mise en évidence d'une vie extraterrestre, présente ou passée, est un sujet de recherche scientifique actif ...