Humanity may not be extraordinary but rather the natural evolutionary outcome for our planet and likely others, according to a new model for how intelligent life developed on Earth.

New research suggests Earth was once a purple planet. Early microbes used retinal, not chlorophyll, for photosynthesis.

Engaging articles, breathtaking images and expert knowledge ...

The "parade of planets" in the evening sky continues. Starting the evening of Feb. 22, Mercury will join the lineup but it ...

The Orion Nebula is one of the best “must-see” attractions in the Butler night sky, and it’s even more impressive once you get to know more about this gargantuan star factory. There’s enough material ...

At peak magnitude, seek out the goddess of love planet in a clear blue sky in the west-southwest during daylight hours, being ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

Explore how new research suggests that intelligent life may emerge naturally under favorable conditions over time.

There's a variety of astronomical events in 2025 well worth planning a trip around this year—whether that means driving to ...

We suggest that as the Earth changed physically and chemically over time, its surface conditions allowed for a greater diversity of habitats for life. And these changes operate on geologic timescales ...

Roughly 300,000 years ago, our species first appeared on the African landscape before spreading globally and coming to ...

Humanity may not be extraordinary but rather the "natural evolutionary outcome" for our planet and likely others, according ...