Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than previously thought — and may be a big reason that our planet harbors life. Earth's ...

The surface of Venus is scoured with strange, quasi-circular features called coronae. Unlike anything seen on Earth today, they can stretch hundreds of miles in diameter, even going past the thousand ...

The continents are in constant motion: Tectonic plates crash together and break apart, creating new crust while old crust is pulled below the surface. The process shrinks and widens oceans, uplifts ...

New telescope images show that the interstellar comet 3I/ATLAS is shooting a giant jet of gas and dust toward the sun. This is normal behavior for comets, an expert told Live Science. The newly ...