Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did ...

You can be moving at extraordinary speed and still feel completely stationary. The reason comes down to the difference between velocity and the changes in motion your body can actually detect.

The Japan Aerospace Exploration Agency's spacecraft is expected to reach the Martian system in August 2027 and return samples ...

The planet Mercury is the smallest member of our solar system’s eight planets. However, its small size (4,880 kilometres in ...

Uranus and Neptune are often described as planetary twins because they are similar in size and appearance. But new research ...

Neither famous number is as simple as it first sounds. The real question is how much uncertainty each one can realistically ...

Solar Cycle 25 is the current solar activity cycle that began in December 2019, marking a solar minimum. In the solar ...

The Icy Assassin That Rewrote the Order of the Solar SystemPrevious Episode RecapIn the previous story, we approached the existence of "Styx," the moon flying through the smallest and harshest region ...

Traveling to each planet depends on distance, spacecraft speed, orbital timing, and mission design. Even inside our own Solar ...

Phobos, it seems, is not long for this universe - at least on the large cosmic timescale. Astronomers have long known that ...

A Japanese-led mission has launched to explore Mars’ two mysterious little moons and determine how they formed — and unlock ...

Observing the Hunter's Moon this weekend? Here's how to see the planets at the same time ...