Observing the interactions between dark matter and so-called "dark photons" during a period after the Big Bang called the "cosmic dawn" could help shed light on the universe's most mysterious and ...

In my part of Alaska, not far from Anchorage, winter solstice is always a dark day, but not because of the lack of light.

In Belize’s Actun Tunichil Muknal cave, a sacred Maya site, plants grow in darkness, sparking concerns about how tourism affects its fragile ecosystem.

The James Webb Space Telescope captured images of 44 individual stars in a gorgeous portrait of a distant galaxy.

Pope Francis encouraged Christians to be “messengers of hope” in the Jubilee Year by saying “‘yes’ to life”.

Reflecting on the Prologue of John’s Gospel, the Pope reminded the faithful that Jesus, the Word Incarnate, is ‘the light ...

Let us not be afraid to throw open bright windows of closeness to those who are suffering, of forgiveness, of compassion, and ...

If we haven't gotten enough of Christmas lights already this season -- on houses, trees, bushes, department stores -- this ...

The Light of the World left His home in heaven to come to earth to pierce the darkness. The people who walked in darkness ...

These magi were in all likelihood astrologers who tried to read the heavens to understand the events of the day. The light in ...

The story of Hanukkah is a story of hope. It is a story of the Jewish people’s resilience throughout history, who despite facing enemies much larger than themselves, prevailed and were victorious. It ...

There are a number of spots in the Midwest, where large, open expanses with little light pollution allow the Northern Lights ...