When the interstellar object known as 3I/ATLAS passed Earth on Dec. 19, 2025, astronomers around the world trained their ...

The article details various types of deep-sky objects observable by amateur astronomers, including double stars, variable stars, open and globular star clusters, emission, planetary, and reflection ...

This post may contain links from our sponsors and affiliates, and Flywheel Publishing may receive compensation for actions taken through them. It was the Greek mathematician Archimedes who said “Give ...

In general usage, symmetry most often refers to mirror or reflective symmetry; that is, a line (in 2-D) or plane (in 3-D) can be drawn through an object such that the two halves are mirror images of ...

An object is something that you can touch. A material is what the object is made from. When we choose a material, we need to select the right one for the object it will finally become. For example, ...