Located less than 20 light years away, HD 20794d could potentially be one of the most Earth-like planets found so far, ...

Earth's orbital eccentricity is 0.017; Mars' is 0.055, and Mercury's is 0.206. HD 20794d's orbit is more elongated than any planet in our solar system, with an eccentricity of 0.4. Its 647-day ...

Despite predictions that the asteroid might become a temporary mini-moon whirling around Earth, the space rock maintained a horseshoe orbit that brought it close, but it never actually entered ...

Some orbits are ever so slightly elliptical (like a somewhat squashed circle, or, in astronomical terms, an orbit with low eccentricity), whilst some appear rather flattened (highly eccentric orbits).

Scheduled to launch on ispace's M2 mission, the Indian CubeSat will ride aboard the lander Resilience, aiming to orbit the Moon and conduct critical technology testing. This mission signifies a ...

Thanks to the Moon’s orbit around Earth, the angle of sunlight hitting the lunar surface and being reflected back to our planet changes. That creates different lunar phases. The next Full Moon ...

Avi Loeb shares the story of how a Tesla Roadster had some astronomers convinced for a time that they had discovered a new ...

While Johannes Kepler taught us that no planetary orbit is perfectly circular, most adhere to an orbit that is pretty close to being a circle. Some worlds, however, have more elongated orbits. The ...

Credit: Chinese Academy of Sciences HELSINKI — China could look to laser power transmission from lunar orbit to supply spacecraft on the moon and solve one of the big challenges for its lunar ...