Neptune is the solar system's most distant planet, a cold, blue ice giant sitting nearly 30 times further from the sun than Earth. At that remote distance, temperatures plunge to nearly minus 200 ...

A new atlas of 45 potentially habitable planets makes us think of the new film "Project Hail Mary," based on the book by Andy ...

Frank Locatell, now 90, an engineer on the Voyager mission, was honored by the city of Palm Desert for his contributions.

Something massive may be lurking far beyond Neptune — and scientists think it’s already shaping the solar system. Based on ...

Discovered in 1930 at the Lowell Observatory, Pluto was demoted as a planet in 2006. Some want President Trump to take action ...

Debate has raged for two decades over whether Pluto should be considered a planet. Some want President Trump to take action ...

Throughout most of recorded history, humankind had known only six planets, five in the sky — Mercury, Venus, Mars, Jupiter and Saturn — plus Earth once it became generally accepted in the 17th century ...

For no explainable practical reason, humans are enamored with – and even empathetic toward – specific inanimate objects. Our first car. A choice coffee mug. And for a particular subset of the ...

A rare celestial occasion will light up the Saturday evening skyline, featuring a bright six-planet parade in a special planetary alignment visible to stargazers. Mercury, Venus, Neptune, Saturn, ...

Step outside just after sunset and you may catch an unusual sight: six planets strung across the sky in a gentle arc. The phenomenon—often dubbed a “planetary parade”—isn’t a cosmic spectacle in the ...

Look into the night sky just after sunset this Saturday and you could see a rare celestial event. Six planets — Venus, Mercury, Saturn, Neptune, Uranus and Jupiter — will align, creating a sort of ...