According to Einstein's theory of relativity and a new NIST study, time on Mars passes faster than on Earth. Discover the ...

Do you know what connects Edwin Hubble’s theory for an expanding universe and Albert Einstein’s cosmological constant? The ...

Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

China has quietly solved a problem that only becomes obvious once you try to live and work off-world: clocks on the moon do ...

The accelerating expansion of the universe is usually explained by an invisible force known as dark energy. But a new study ...

Researchers at Stevens Institute of Technology and Yale University are initiating a first-of-its-kind experiment designed to detect gravitons, the hypothesized quantum building blocks of gravity.

The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...

Why the universe is expanding faster and faster remains one of the biggest open questions in physics. Current theories cannot ...

Last year delivered doses of drama and excitement in the space business, with a record number of launches, breathtaking ...

Which US rocket companies achieved the most during 2025? Once again, Ars Technica is here to provide some answers in the form ...

AI toys, companions, and robots have been everywhere at CES this year, but among the horde of waddling plushies and light-up ...

Former SpaceX propulsion CTO Thomas Mueller’s space startup reached unicorn status this year thanks to $525 million in ...