Astronomers simply can't shake the feeling that there's something really off about interstellar object 3I/ATLAS. The ...

The solar system lost its ninth planet back when Pluto was demoted to a dwarf planet, but research might indicate that there ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought experiment to it, highlighting everything ...

A new trans-Neptunian object, 2017 OF201, has been found with a vast orbit and potential dwarf planet size. The finding hints ...

Astronomers have recently turned their attention to a mysterious object from outside the solar system—3I/ATLAS. By analyzing ...

Smithsonian researchers analyzed fragments of the near-Earth asteroid and discovered water-rich clays that hint at a distant ...

Stellar astronomy and planetary systems form a cornerstone of astrophysical research, uniting our understanding of the life cycles of stars with the intricate architecture of the systems that form ...

On Episode 176 of This Week In Space, Rod Pyle and and Tariq Malik are joined by Alan Stern to talk about what's next in deep ...

White dwarfs, the compact remnants of low- to intermediate-mass stars, offer a unique window into the fate of planetary systems. Recent observational and theoretical work has revealed that many ...

Astronomers have classified planetary systems into four distinct categories, based on the sizes and arrangements of their planets. As it turns out, the architecture of our own solar system is the ...

Celestial mechanics remains crucial in unraveling the mysteries of our inner solar system’s past.