The Mars New Year Countdown Breakfast will be held Monday, Feb. 23, at the Regional Learning Alliance in nearby Cranberry ...

Who’s ready for a “planet parade”? The last planetary alignment was in August 2025, when six planets aligned and four were bright enough to be seen without a telescope. Next week, Mercury, Venus, ...

Mars presents one of the strangest sights in the solar system: a blue-tinted Sun setting against a red sky. This episode ...

In late winter, the zodiacal light is visible in the evening in the Northern Hemisphere (false dusk) and in the pre-dawn ...

Marcia Bjornerud loves rocks. Not just under a petrographic microscope, but as animated entities with properties and personalities born from their long, eventful lives. “I’ve reached a point in my ...

Planetary systems in the Milky Way galaxy tend to follow a particular pattern: rocky planets toward the center, closest to ...

"We would not have any way to go and actively deflect one right now," warns the scientist who led NASA's DART mission.

In theory, water-based propulsion systems are a low-cost, safer alternative to conventional engines. Water is easier to ...

Delta on Mars. A recent study showed that Mars was warm and wet billions of years ago. The finding contrasts with another ...

In a conventional system like our own, rocky planets such as Mercury, Venus, Earth, and Mars orbit closest to the host star. Farther out, gas giants ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

A recent study showed that Mars was warm and wet billions of years ago. The finding contrasts with another theory that this era was mainly cold and icy. The result has implications for the idea that ...