We have discovered two interstellar objects so far, ’Oumuamua and Comet 2I/Borisov. ’Oumuamua had no dust tail and a ...

Aliens are visiting our solar system. Not little green men, sadly, but natural alien objects—cosmic bodies such as comets and ...

How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here ...

The orbit of TIC 241249530 b has an eccentricity of 0.94, which is more eccentric than the orbit of any other exoplanet ever found via the transit method of exoplanet detection.

Earth’s orbit around the Sun is not circular, but an ellipse that is slightly elongated with an eccentricity of 0.017. (An eccentricity of 0 is a circle, while the dwarf planet Pluto has a ...

By the scientists' estimates, the planet's stretched-out orbit has the highest eccentricity of any planet detected to date. The new planet's orbit is also unique in its "retrograde" orientation.

Zero equates to a perfectly circular orbit. In our solar system, Earth has an eccentricity of 0.02, while Pluto’s highly oval-shape orbit around the sun is considered 0.25.