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

The other two known interstellar comets did not offer such an opportunity.

Earth’s orbit around the Sun isn’t a perfect circle—it’s slightly elliptical. Each year, around July 2 or 3, Earth reaches its farthest point from the Sun, known as aphelion. Around January 2 or 3, ...

The Moon’s gravitational pull on Earth, combined with other forces, causes our surface water to be redistributed into bulges ...

As we get closer to the end of the year, the days get shorter and shorter. Meanwhile, they get longer and longer as we get into the spring. This is all due to the angle of the sun in our sky. The sun ...

3I/ATLAS will enter a rare opposition phase, aligning on the axial path of Earth and Sun on Jan 22 (EST) or Jan 23 at 5 am ...

Earth is at its farthest point from the sun on July 3. So why are temperatures so high across the U.S.? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...