Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

In its preliminary data release, taken from just seven nights of observations, the powerful Vera C. Rubin Observatory has discovered an enormous, fast-spinning asteroid that sets a new record.

Facing death is a core part of making meaning of one’s life. To struggle through this universal contemplation without a ...

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

Time travel is still very much science fiction, at least to us laymens.. But in the world of physics that’s not the case.

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

Quantum mechanics and relativity are the two pillars of modern physics. However, for over a century, their treatment of space ...

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

If you’re concerned about getting every microsecond out of life, then you might not want to migrate to Mars. Using extremely ...

Astronomers have seen spacetime itself wobble near a spinning black hole for the first time. The discovery, revealed during a star’s destruction, confirms a major prediction of Einstein’s theory of ...

The Princeton that Albert Einstein knew in 1933 was sharply divided by the color line; a long-established border—marked by ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...