NASA's New Horizons spacecraft made history by flying past Pluto, sending back groundbreaking data that would change our ...

Trans-Neptunian objects (TNO) are some of our solar system's lesser-known objects. They number in the thousands, and they get their name from their orbits. These dwarf planets orbit the sun at a ...

New moons are the cardinal phase of the monthly lunar cycle, and they occur when the sun and moon meet at the same point in ...

NASA's leadership change comes at a pivotal moment for the agency, which is already bracing for potentially severe funding ...

Worried about Mercury going retrograde on July 18? Here’s how to work with retrograde energy instead of against it.

There are currently no other explanations for the effects that we see, nor for the myriad other P9-induced effects we see on ...

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar System. Named 2023 KQ14, this rare “sednoid” follows an unusual orbit that ...

The Subaru Telescope has made an exciting discovery: a small body beyond Pluto, with implications for the formation, ...

Astronomers have discovered the earliest seeds of planets forming around HOPS-315, a baby star located 1,300 light-years away ...

"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

Pluto, the fourth ninth planet -- 11. Hidden secrets of the outer solar system -- 12. The plutinos -- 13. Is Pluto a planet? -- 14. Goldilocks -- Postscript. Current thoughts by other astronomers -- ...