The winter solstice is quickly approaching. Here's what you need to know about the official start of winter in 2025.

The winter solstice marks the shortest day and longest night of the year, but when is it in 2025 and what more does it ...

The sun’s current 11-year activity cycle has already peaked—but extreme outbursts from our star may still be in store ...

For thirty years, SOHO has delivered an unprecedented, nearly unbroken view of the Sun, surviving multiple near-catastrophic ...

The interior of the Sun does not rotate at the same rate at all latitudes. The physical origin of this differential rotation is not fully understood. It turns out, long-period solar oscillations ...

Where are the bright naked-eye planets in December 2025 and when are the best times to view them?

On 2 December 1995, the ESA/NASA Solar and Heliospheric Observatory (SOHO) blasted into space—on what was supposed to be a ...

The European Space Agency's Solar Orbiter spacecraft has achieved a groundbreaking milestone by capturing the first-ever ...

Space weather experts warn that solar activity will persist or even increase after solar maximum has ended and we enter a phase of the solar cycle dubbed the "battle zone." When you purchase through ...

By Tom Hawking Published Nov 30, 2025 9:00 AM EST Tayfun Coskun/Anadolu via Get the Popular Science daily newsletter💡 ...

I nterstellar comet 3I/ATLAS will make its closest approach to Earth this month, whizzing by at 270 million kilometers (168 ...