Astronomers have identified a mysterious deep-space object that appears to defy current scientific understanding, prompting renewed debate about how the universe forms and evolves over time. The ...

- Lagoon Nebula (M8) is an emission nebula in Sagittarius.

It’s the farthest long-distance phone call in the known universe. When the astronauts of the Artemis II mission embark Wednesday on their scheduled journey beyond Earth’s orbit, in order to phone home ...

In Focus delivers deeper coverage of the political, cultural, and ideological issues shaping America. Published daily by senior writers and experts, these in-depth pieces go beyond the headlines to ...