Astronomers have speculated for decades that Venus could once have been remarkably similar to Earth – and might have been ...

Drilling through the Earth to reach the other side is currently impossible due to the immense complexity and technological ...

Plate tectonics, or the recycling of Earth's crust, may have begun much earlier than previously thought—and may be a big ...

When I dug holes as a kid, I was scratching away at the very top of Earth’s crust. The mantle, which lies beneath the crust, is much thicker, like the flesh of the apple. It’s made of strong, heavy ...

New research suggests Venus never had oceans, making it uninhabitable, with implications for understanding planetary ...

Physicist Stephen Hawking's predictions about Earth's future resurface as NASA warns of existential threats like climate change and overpopulation. Hawking urged action to colonize other planets ...

Borehole walls are under tremendous pressure and prone to failing. The slow movement of Earth’s mantle would eventually cause a borehole to bend and collapse. Magma, gases and liquid metal deep ...

What Is Earth’s Tilt? It's a well-known fact that Earth’s axis is tilted at an angle of about 23.5 degrees, which is a reason ...

Think Earth is just a static rock? Dive deep, and you'll find a dynamic world where metals leak, water seeps, and its insides ...

The number of satellites in Earth's orbit has skyrocketed from about 1,000 in 2010 to more than 10,000 today. According to a government report, an additional 58,000 satellites could launch by 2030 ...

SpaceX and other companies plan to fill the skies with tens of thousands of internet satellites. Satellite mega-constellations could harm the atmosphere, say scientists calling for more research ...