Fidelity's Contrafund marked down its biggest stake in Space X-rival Relativity Space by around 21%, from $22.83 a share to $17.96.

Ryan Kanavaugh’s Relativity Media had a “hostile environment” that included porn photo shoots at its Beverly Hills headquarters, a lawsuit filed against the Hollywood studio claims. Adam Fields, who ...

See how Relativity's Terran 1 rocket got from the 3D printer to the launch pad in these highlights. Credit: Relativity Space ...

Einstein's theory of general relativity, published in 1916, built upon his earlier work, including special relativity and the mass-energy equivalence, both published in his "Annus Mirabilis" in 1905.

Why can't anything travel faster than the speed of light? Do black holes really suck? And why is the universe expanding? These are just a few of the questions author and astrophysicist Jeffrey Bennett ...

Dubbed as 3I/ATLAS, an interstellar comet has occupied the centre stage for quite some time. 3I/ATLAS, which originated outside our solar system, has now reportedly confirmed one of Albert Einstein's ...

Relativity Space has completed a critical design review of its Terran R rocket as it works towards a first launch as soon as late 2026. Credit: Relativity Space WASHINGTON — The former chief executive ...

When the theory of relativity appeared in the early 1900s, it upended centuries of science and gave physicists a new understanding of space and time. Isaac Newton saw space and time as fixed, but in ...

Relativity Space uses giant 3-D printers to produce components for its Terran rockets. (Relativity Space Photo) Relativity Space, the startup that was founded in Seattle and is now building 3D-printed ...

Einstein put forth special relativity, which explains motion at near-light speeds. Although there are many consequences of Special Relativity, this complex theory consists of only two postulates, both ...

Monisha Ravisetti was a science writer at CNET. She covered climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical ...