Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered two new exoplanets around a young ...

A new program has discovered chaos in a nearby planetary system, which could explain the existence of a phenomenon ...

Washington, DC – Three new objects locked into roughly the same orbit as Neptune–called “Trojan” asteroids–have been found by researchers from the Carnegie Institution’s Department of Terrestrial ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

Astronomers in Japan have spotted a distant object orbiting the Sun far beyond Neptune, pointing to an extraordinary event that took place during the earliest years of the solar system. Astronomers ...

New images released Wednesday from NASA's James Webb Space Telescope are revealing Neptune, and the planet's hard-to-detect rings, in a fresh light. "It has been three decades since we last saw these ...

Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

What is Neptune's Opposition? Understanding the Phenomenon of Opposition. Imagine when Neptune, Earth, and the ...

First, let’s compare the orbital characteristics of Pluto with those of other planets. Pluto has an orbital eccentricity (the degree to which its orbit deviates from a perfect circle) of 0.25, while ...

For decades following the discovery of Uranus in 1781, astronomers were puzzled by the irregularities in the planet's orbit.

Neptune’s large moon Triton may have abandoned an earlier partner to arrive in its unusual orbit around Neptune. Triton is unique among all the large moons in the solar system because it orbits ...