space_exploration – Milldpress

Mysterious Planet Nine May Still Lurk in the Outer Solar System

admin5549 months ago04 mins

The concept of a large, hidden planet or planets lurking in the most distant regions of our solar system has been known since before Pluto’s discovery on 1930s. Originally named “Planet X,” it had been proposed to account for irregularities in Uranus’s orbit. That mystery was eventually resolved by recalculating Neptune’s mass. But in 2016,…

Uranus Found Emitting Internal Heat, Reviving Hopes for Flagship NASA Mission

admin5549 months ago04 mins

Uranus, the seventh planet from the Sun, is usually known as a frozen “ice giant.” But in July 2025 astronomers announced a big surprise: Uranus is actually emitting more heat than it receives from sunlight. Decades of data and new models show Uranus emits about 12% more internal heat than it gets from the Sun….