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

Relativity Space plans to launch its new reusable, 3D printed rocket Terran R by 2024. The company has just raised funds in a round led by Fidelity.

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.

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.

In 2015, the general theory of relativity will be 100 years old. In November 2015, Albert Einstein gave weekly lectures to the Prussian Academy of Sciences in which he set out the fundamental field ...

Relativity Space Inc. co-founder Tim Ellis wanted to revolutionize the rocket industry with 3D printing. He persuaded big-name investors from BlackRock Inc. and Fidelity Investments to Mark Cuban and ...

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 ...

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

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 ...

California-based startup Relativity Space is one of many launch startups, but it stands out for its 3D-printing approach to manufacturing rockets while also pursuing fully reusable rockets. Relativity ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. When we think about Einstein and the theory of relativity, all sorts of ...