Pettit is a veteran of two long-duration stays aboard the ISS, and is currently undertaking his third. On September 11 2024 ...

In orbit, there is no need to find a clean, flat surface to change a lens - all the components simply float in front of you.

With the amazing power of modern telescopes, our "best of" astronomy websites have abundant evidence of gravity bending light, acting like a lens. If the alignment of a background object with a ...

NASA astronaut Don Pettit demonstrates zero-gravity conditions aboard the ISS.

Recent research has explored various extensions and modifications of traditional gravity models, particularly through the lens of algebraic symmetries and topological considerations. These studies ...

An astronaut onboard the International Space Station (ISS) recently demonstrated how to change a camera lense in zero-gravity ...

Back on terra firma where gravity lives, changing a lens can sometimes be a cumbersome affair that leaves you wishing you had two pairs of hands instead of one. But up in orbit, master ...