Earth is the only planet in our solar system with a single moon, making it a rare phenomenon for a planet of its kind.

The second and final solar eclipse of 2025 is set to occur on September 21. It will be a partial solar eclipse.

Oceans cover three-quarters of the Earth, yet only 20% of the seafloor has yet been mapped. The race to understand these depths could further scientific understanding, but also lead to exploitation.

The next partial solar eclipse is on the same day as September's new moon: Sept. 21. During a solar eclipse, the moon casts a ...