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31 de may. de 2024 · Stromatolites are the earliest geological record of life on Earth. These curious biotic structures are made of algae carpets growing toward the light and precipitating carbonates. After their ...
8 de jun. de 2024 · Knowing when the cradle of life—water and land—first appeared on Earth ultimately provides clues as to how we came to be. Water and land: The essences of life Imagine you've stepped into a ...
3 de jun. de 2024 · Astronomers have thought about looking for life on exoplanets by looking for oxygen. They started with this strategy because on Earth, life-forms made most of the oxygen in our atmosphere. Maybe ...
7 de jun. de 2024 · They started with this strategy because on Earth, life-forms made most of the oxygen in our atmosphere. Maybe oxygen on another planet was made by alien life. We’ve learned, though, that there are other ways to make oxygen that don’t involve life. So now, astronomers don’t look for just oxygen – instead they’re on the hunt for a ...
7 de jun. de 2024 · JPL, CC BY. Astronomers have thought about looking for life on exoplanets by looking for oxygen. They started with this strategy because on Earth, life-forms made most of the oxygen in our ...
7 de jun. de 2024 · Instead, they tried to design experiments to look for what life does, rather than what it makes. For example, plants and some other life-forms on Earth do photosynthesis, a process that uses ...
7 de jun. de 2024 · Astronomers have thought about looking for life on exoplanets by looking for oxygen. They started with this strategy because on Earth, life-forms made most of the oxygen in our atmosphere. Maybe oxygen on another planet was made by alien life. We’ve learned, though, that there are other ways to make oxygen that don’t involve life.
