In this video, we explore the vastness of the universe and attempt to quantify its size. We delve into the concepts of cosmic ...

Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain forever unknown.

“The cosmos is also within us, we're made of star-stuff. We are a way for the cosmos to know itself.” - Carl Sagan Compared to the Sun, how big is the Earth? What is a scale model and how does it help ...

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...