Space and time seem like two completely different ideas, but Einstein showed they are interlinked in what is known as ...

Is time something that flows — or just an illusion? Exploring space-time as either a fixed “block universe” or a dynamic ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The id ...

Seeking endorsements for her new book, Chanda Prescod-Weinstein finds herself staring at fundamental questions of space, time ...

The retirement of the ISS in 2030 has created an opportunity for commercial space travel. How will they shape this next phase ...

The consequences would be staggering. A 30-day loss of Global Positioning System (GPS)-based timing and positioning services ...