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 ...

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

What is “down” in the vastness of space? Scientists reveal how gravity, cosmic planes, and perspective redefine direction, ...

In astronomy, an occultation is when a celestial body or object — like the moon or a planet — passes in front of a distant ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ...

Astronomers study planetary transits and atmospheric signals using interstellar object 3I/ATLAS, drawing on transit spectroscopy principles and recent observational constraints discussed by Avi Loeb.

From the deck of a ship or the window of a plane, it feels obvious that “down” points toward Earth and “up” points toward the ...

Planets, stars, and star clusters, oh my!

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

Astronomers investigating 3I/ATLAS suggest its unique trajectory allows interstellar observers to detect Earth's industrial ...

Most people think they know exactly where “down” is. It’s the direction your feet point. But that familiar sense of ...

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