Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy. These "free-floating" worlds don't orbit stars, but instead roam the ...

For years, astronomers have been searching for a ninth planet in our solar system (after giving Pluto ... “It’s motivated us a lot.” As with all Planet 9 research, the findings have been ...

but both men previously suggested a “Planet X” existed in the far reaches of the solar system. “It’s kind of fun that a paper that purports to find a candidate for Planet Nine is really ...

For nearly a decade, scientists have been on the hunt for Planet Nine – a hypothetical celestial object on the edge of our Solar System ... does not exist at all. Article continues below ...

In 2005, thanks to Michael Brown’s scientific antics, Pluto was removed from the list of planets in the solar system. In 1968, the Apollo 8 mission flew around the moon. In 2001, Chris Hadfield became ...

Venus will partner up with the giant planets Saturn and Neptune to form a line up in the pre-dawn sky on May 8, with ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

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Astronomer Eliza Kempton said that she had waited her "entire career" to peer into an atmosphere from this mysterious class ...

The heads of Solar United Neighbors and Vote Solar explain how they’re handling adversity and where they see progress.

And last month, scientists said that they discovered the strongest indication yet of life on a planet 120 light-years away.