Most planetary systems contain worlds larger than Earth but smaller than Neptune, and the low-density planets around one ...

Polar dunes on Mars, swirling clouds on Jupiter, and stunning sights in the night sky on Earth are featured this week. Plus, ...

There’s a lot of energy right now around taking big leaps with deep-space missions, as sustained lunar activity and Mars exploration gain momentum. Commercial players are leading, but major leaps ...

The stars may not be aligning on Friday night, but seven planets in our solar system just may be. For weeks, outer space enthusiasts have been gearing up for a planetary alignment, or "planetary ...

Sometimes planetary physics is like being in a snowball fight. Most people, if handed an already-formed snowball, can use their experience and the feel of the ball to guess what kind of snow it is ...

On January 25, 2025, the cosmos will present a spectacular event known as a planetary alignment, where all major planets in our solar system will line up in a harmonious formation. This celestial ...

We need to reimagine global governance. In public health, we now accept that human and planetary wellbeing are inseparable. The climate crisis, biodiversity loss, pollution, pandemics, and inequity ...

Planetary nebulae are colorful clouds of gas from dying stars. Brighter nebulae show more color due to intense light. Many planetary nebulae are visible even from suburban areas. Larger telescopes ...