As the sun enters the justice-seeking sign of Libra, themes of balance, compromise and relationships take precedence ...

Pluto's unusual eccentricity and tilt is likely due to its interactions with neighboring Neptune and other giant planets, ...

Saturn’s moon Enceladus has long dazzled scientists with its icy plumes that spew water and mysterious organic molecules into space, fueling hopes of a habitable ocean beneath. But new experiments ...

The methane emission is explained by solar-excited fluorescence. Sunlight interacts with methane molecules, causing them to ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and ...

Pluto may have been demoted to non-planet status, but it still commands a court of five moons, as is fitting for the king of ...

The astronomical phenomenon of Pluto's opposition reoccurred on the 25th, providing astronomy enthusiasts with the best opportunity to observe this distant celestial body throughout the year. During ...

"Makemake is one of the largest and brightest icy worlds beyond Neptune, and its surface is dominated by frozen methane," ...

"The profile of the occultation was most consistent with it being a new satellite — a new moon — going around Quaoar." ...

On Episode 176 of This Week In Space, Rod Pyle and and Tariq Malik are joined by Alan Stern to talk about what's next in deep ...