Skywatchers throughout the Northern Hemisphere are enjoying views of the newly discovered Comet SWAN.

The orbit of C/2025 F2 (SWAN) has an eccentricity of 0.9999736 ... for perspective, Pluto is on average "only" 3.67 billion miles (5.91 billion km) from the sun. That having been said, after ...

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

But then scientists at the International Astronomical Union decided Pluto didn’t quite make the cut, it lacked the gravitational muscle to clear its orbit. Ouch. Now officially labeled a ...