The rate of finding these distant worlds has recently increased, with astronomers scrambling to accommodate the data ...

For decades following the discovery of Uranus in 1781, astronomers were puzzled by the irregularities in the planet's orbit. Newton's laws could not explain the perturbations observed, suggesting ...

It might seem unfathomable to us living today, but 179 years ago on this very date, our galaxy, The Milky Way, actually grew ...

On Sept. 23, 1950, the U.S. Congress adopted the Internal Security Act, which provided for the registration of communists.

Researchers are discussing 2025 PN7, a small celestial body that's following a similar orbital path to our planet's without being gravitationally tied to Earth ...

The universe is a slow-changing place. While it's mostly true that the heavens and the deep-sky objects in it will look ...

New Moon Solar Eclipse in Virgo is happening on September 21, 2025 at 3:54 p.m. ET. Read how it will impact each sign.

New simulations suggest Earthlike planets may be much more typical than previously thought whereas water worlds may not.

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

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

A neutrino sensor array, ARCA, lines the Mediterranean seafloor near Sicily. A physicist took ARCA’s first huge win to a warm ...