When I watch the World Cup, I always think about set pieces. This is when the ball is placed at a certain spot and a team is allowed to then kick the ball (called a free direct kick). If this kick ...

This is one of my favorite stories. In short, one of John Burk's (@occam98) students wanted to launch a space balloon. If you want all the details, this post at Quantum Progress pretty much says it ...

With its shrunken polar cap and its large apparent angular size, Mars is viewed here during Martian summer and while Earth nears opposition: where the Sun, Earth, and Mars all form a straight line.

Intuitively, we all know that when we see an image of an object, it could either be large and far away or small and close by. Only with a three-dimensional measurement can we actually know what's ...

The article explores the challenge of visually detecting variations in the Moon's apparent size, which are caused by its changing distance from Earth during perigee and apogee, amidst perceptual ...