A very rare treat is about to grace Earth's night skies. On the evening of 28 February 2025, all seven of the other planets ...

The newcomer replacing Pluto presently goes by “Planet Nine.” If and when it finally shows up, it will get the honor of a ...

Some stargazers are calling it a planetary parade: Every other planet in our solar system can be seen in the sky tonight.

If Brown’s hidden world is real, Rubin will almost certainly find it or strong indirect evidence that it exists. “In the ...

The Webb Telescope reveals new insights into icy planetesimals, shedding light on the early solar system's evolution.

Delving into the behaviors of the Sun and protecting humans at home and beyond are top priorities, according to the National Academies.

For two decades now, the iconic twin Voyager spacecraft have been quietly overturning everything we thought we knew about the ...

Operations teams have confirmed NASA’s mission to “touch” the Sun survived its record-breaking closest approach to the solar surface on Dec. 24, 2024.

The possibility that there might be a large, unknown planet lurking in the outer Solar System far beyond Pluto has long been a staple of science fiction. But for the past decade, astronomers have been ...