Universe
Discover the latest trends in Universe.
Roche Limit: A Cosmic Breaking Point
Discover the Roche limit, the cosmic boundary where a celestial body's own gravity is overwhelmed by tidal forces, leading to its disintegration.
Right Ascension: Your Guide to Sky Longitude
Discover right ascension, the celestial equivalent of longitude. Learn how astronomers use this coordinate to map and locate stars, galaxies, and planets.
Cosmic Redshift Explained
Discover redshift, where light from distant galaxies stretches to redder wavelengths, providing key evidence for the universe's expansion.
Explainer: What is a Red Giant?
Discover the red giant, a dying star in a late stage of stellar evolution. Learn what happens when a star like our Sun runs out of hydrogen fuel.
Red Dwarfs: The Universe's Tiny Stars
Discover red dwarfs, the most common stars in the universe. Learn why these long-lived, dim stars are top targets in the search for habitable exoplanets.
The Recombination Era Explained
Explore the Recombination Era, the pivotal moment when the universe first became transparent, releasing the light we now see as the cosmic background.
Radio Waves Explained: The Unseen Signals
Discover radio waves, the invisible part of the electromagnetic spectrum that powers everything from your Wi-Fi to our understanding of the cosmos.
Radiation Explained: The Invisible Energy
Explore radiation, the emission of energy through space. Learn about its types, its role in the universe, and its impact on technology and health.
Radial Velocity: Finding New Worlds
Discover the radial velocity method, a key technique using the Doppler effect to find distant exoplanets by observing tiny stellar 'wobbles'.
Explaining Quasars: Cosmic Lighthouses
Discover quasars, the incredibly luminous hearts of distant galaxies powered by supermassive black holes. Learn why they are key to understanding the early universe.