A last-minute, rushed rocket launch for the U.S. Space Force may have punched a hole in the Earth’s atmosphere. Rockets sometimes create holes in the ionosphere as a result of a chemical reaction between burning fuel and various gases found in the atmosphere. Here’s what you need to know. ...

Saguaro National Park in Tucson, Arizona has been named a new Urban Night Sky Place for offering authentic, dark views of the night sky despite light pollution from the nearby city. ...

The 4.5-billion-year-old Bennu asteroid sample was dropped to Earth in a sealed capsule that landed in the Utah desert last month. Scientists are still unpacking it, but here’s what they’ve found so far. ...