The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Comet C/2023 P1, Nishimura visible from Earth. Credit: NASA/JPL-Caltech | edited by Space.com ...

Add Yahoo as a preferred source to see more of our stories on Google. The sun shines above the Earth’s horizon. Perihelion, the point when Earth is closest to the Sun, occurs annually in early January ...

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 ...

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

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

NORFOLK, Va. — The earth’s journey around the Sun is not a perfect circle. Instead, our planet follows a slightly oval-shaped path called an ellipse, meaning our distance from the Sun changes ...

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

Each year, Earth reaches its closest point to the sun in early January, a moment called perihelion. In 2026, this occurred on ...

Earth reaches its closest point to the sun in its 2026 orbit on Jan. 3. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The sun will appear ...

Every year in early January, Earth reaches the closest point in its orbit to the Sun, a moment astronomers call perihelion.