Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

The interstellar comet 3I/Atlas reached its closest point to the sun. Here's how to follow the rest of its journey away from ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

During the 1240s, Richard Fishacre, a Dominican friar at Oxford University, used his knowledge of light and color to show ...

When should therapists lead, and when should they listen? Here's how to balance directive vs non-directive therapy with ...

From dating to marriage, we’ve learned to judge instead of relate. We think discernment protects us, but constant evaluation may be the real red flag in modern love.

A newly discovered comet named C/2025 V1, which some have compared to 3I/ATLAS, is due to make its closest approach to Earth on Tuesday, Nov. 11.

The three interstellar objects are unique, billion-year-old fragments and kinetic artifacts collected from countless ...

Newly discovered comet C/2025 V1 (Borisov), which has some minor similarities to 3I/ATLAS, will make its closest approach to ...