When my colleagues and I send them out to explore our solar system, it's important for us to understand the 3D map of our ...

February’s night skies hold a certain celestial splendor that only enthusiastic and vigorous skywatchers have the fortitude ...

Earth and its neighbors orbit the sun on a relatively flat plane. But what's below this plane, and is anythign below the ...

The September 2025 issue featured "A guide to beginner's guides," a reminiscence and description of some the books for astronomy beginners that Contributing Editor Raymond Shubinski recommends or ...

"Without Mars, Earth's orbit would be missing major climate cycles. What would humans and other animals even look like if ...

On the evening of February 28, 2026, skywatchers will be treated to a rare spectacle as at least six planets become visible ...

Four of the planets, which are Mercury, Venus, Jupiter and Saturn, are bright enough to be spotted with the naked eye in ...

Harvard astrophysicist Avi Loeb identifies 18 anomalies of interstellar object 3I/ATLAS, raising questions about whether it ...

The star will be visible tonight, appearing slightly above the rising moon. Optimal viewing time for Regulus is around 8:50 p.m. local time. In some parts of the world, the moon will pass in front of ...

Most people think they know exactly where “down” is. It’s the direction your feet point. But that familiar sense of orientation starts to unravel when viewed from space. What happens to “down” when ...

This January the new moon rises in Capricorn amidst a potent constellation of planetary movements. Here's how to make the ...

In the bigger picture, “down” could be defined as being below the plane of the solar system, which is known as the ecliptic.