The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

A new study, currently under review for publication, suggests that an ancient cosmic visitor might have significantly altered the orbits of our solar system's giant planets. Scientists propose that ...

On Neptune far out in the solar system it’s a different story—but what happens on the ice giant planet nevertheless appears to be inextricably linked to the same solar cycle. Having looked at ...

Ukraine has successfully scaled up mass production of Neptune missiles, and they have also been improved, according to Ukrainian Defense Minister Rustem Umerov. He noted that he held a meeting ...

If confirmed, the "exomoon" is likely to be about the size and mass of Neptune, and circles a planet the size of Jupiter but with 10 times the mass. The signal was detected by Nasa's Kepler Space ...

The potential discovery of a large planet beyond Neptune’s orbit could change everything we know about the Solar System.

Feb. 2, 2024 — Astronomers have shown new atmospheric detail in a set of 15 exoplanets similar to Neptune. While none could support humanity, a better understanding of their behavior might help ...

Kuiper Belt, well past the orbit of Neptune (artistic illustration ... s demotion in 2006—the discovery of a distant Earth-mass planet would have profound implications for planetary science.