Planck's constant reveals the quantum world's fundamental energy levels. It shows how light and matter exist in discrete units (quanta). This constant defines limits to our knowledge of particle ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of the universe to its utmost limits, we can finally, confidently say that the ...

Introduction to Astronomy is a college class usually filled with excitement and a lot of questions about outer space. Questions like: What are black holes? Are there planets out there that are ...

Have you ever looked up at the night sky and wondered exactly what you’re seeing? On Friday, Feb. 28, if you take a moment to turn toward the sky, you’ll be in for a special treat. Seven ...

There's no shortage of round celestial objects in our universe. Planets, moons and stars all exhibit lovely spherical shapes. But astronomers recently spotted a mysteriously circular orb deep in the ...

Was a powerful cosmic explosion seen by the Einstein Probe launched by a supermassive black hole snacking on a star, by a gamma-ray burst, or by something entirely new? When you purchase through links ...

Before defining what a light-year is, we should define what a light-year is not: It is not a measure of time, but rather a measure of distance. The confusion arises from the “year” that comes at the ...