The dirty afterlife of a dead satellite

Sometimes we humans get ahead of ourselves. We embark on grand engineering experiments without really understanding what the long-term implications of such projects are. Climate change itself is a perfect example of that—no ...

Dark matter, not a black hole, could power Milky Way's heart

Our Milky Way galaxy may not have a supermassive black hole at its center but rather an enormous clump of mysterious dark matter exerting the same gravitational influence, astronomers say. They believe this invisible substance—which ...

When Earth's magnetic field took its time flipping

Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature. Every so often, the magnetic north and south poles swap places in what are called geomagnetic reversals, ...

The Amaterasu particle: Cosmic investigation traces its origin

Cosmic rays are extremely fast, charged particles that travel through space at nearly the speed of light. The Amaterasu particle was detected in 2021 by the Telescope Array experiment in the U.S. It is the second-highest-energy ...

Why has SpaceX not launched from Kennedy Space Center this year?

SpaceX launched 26 missions from Kennedy Space Center's Launch Pad 39-A in 2025, including four human spaceflight missions. That era is coming to an end. A massive crane was put in place this week with speculation it will ...

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