Every week, the readers of our space newsletter, The Airlock, send in their questions for space reporter Neel V. Patel to answer. This week: how to produce artificial Earth-like gravity through ...

Newton's Second Law states that force equals mass times acceleration. This can be investigated using a set-up like this one. You can use this set-up to investigate how changing two separate factors, ...

In Marvel's "Avengers: Infinity War," supervillain Thanos uses a simple gesture — a snap of a finger — to destroy half of all life in the universe. But the mass-murdering comic book character not only ...