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Hace 2 días · The history of life on Earth traces the processes by which living and fossil organisms evolved, from the earliest emergence of life to present day.
Hace 4 días · Along with Venus, Earth, and Mars, Mercury is one of the rocky planets. It has a solid surface that is covered with craters. Instead of an atmosphere, Mercury possesses a thin exosphere made up of atoms blasted off the surface by the solar wind and striking meteoroids.
Hace 4 días · Solar activity can have effects here on Earth, so scientists closely monitor solar activity every day. An image of active regions on the Sun from NASA’s Solar Dynamics Observatory. The glowing hot gas traces out the twists and loops of the Sun’s magnetic field lines.
Hace 6 días · plate tectonics, theory dealing with the dynamics of Earth’s outer shell—the lithosphere—that revolutionized Earth sciences by providing a uniform context for understanding mountain-building processes, volcanoes, and earthquakes as well as the evolution of Earth’s surface and reconstructing its past continents and oceans.
14 de may. de 2024 · Human expansion has wreaked havoc here on Earth, on both peoples and ecosystems. But things can be reversed when we settle the High Frontier. Comments (24)
Hace 4 días · All About Earth. Our home planet Earth is a rocky, terrestrial planet. It has a solid and active surface with mountains, valleys, canyons, plains and so much more. Earth is special because it is an ocean planet. Water covers 70% of Earth's surface. Explore Earth!
15 de may. de 2024 · Here on Earth, we all live in a state of gravity. Not only us, but everything around us, including water, is being pulled towards the center of the planet by gravity.
