The Science on Main initiative group is seeking feedback from the community on what to add to the planned Solar System Walk ...

The search for life beyond Earth is a holy grail quest for many experts, but finding where to look is a core issue.

In searching for the elusive Planet Nine, researchers instead turned up a different resident in our cosmic backyard.

A possible new dwarf planet described as "Pluto's cousin" has been found at the edge of the solar system, so far away that it takes around 25,000 years to complete one orbit around the Sun.

Escanaba's newly refurbished Planet Walk is a 13-plaque walk that at City Hall with the Sun and includes full-color signs ...

Vienna has a way to make affordable housing and combat climate change all at the same time. Now U.S. cities want in, and they ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

For the dwarf planet candidate, one trip around the sun takes over 24,000 years. Its orbit challenges a proposed path for a hypothetical Planet Nine.

If there were one, that Planet Nine would "nudge the closest part of 2017 OF201's trajectory inward until Neptune flung it out of the solar system." Because 2017 OF201 is there, that could be an ...

Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have discovered a new planet in our solar system.