Universe
Discover the latest trends in Universe.
Explainer: What Is a Star?
Discover what stars are, from their fiery nuclear fusion cores to their role in creating elements. Learn how these celestial bodies shape the universe.
Standard Candles: Cosmic Yardsticks
Discover standard candles, astronomical objects with known brightness used by scientists to measure vast distances across the universe and map its expansion.
What Is a Spiral Galaxy?
Explore spiral galaxies, the stunning star cities with swirling arms that are home to stars like our sun. Learn why our own Milky Way fits this type.
Cosmic Speed Limit Explained
Discover the ultimate cosmic speed limit. Learn what the speed of light is, why it's a constant, and its profound impact on our universe.
Spectroscopy: Unlocking Cosmic Secrets
Discover spectroscopy, the science of analyzing light to reveal the chemical makeup of stars, planets, and galaxies. Learn why it's key to JWST's discoveries.
Einstein's Special Relativity
Discover Einstein's theory of special relativity. Learn how it reshaped our understanding of space, time, and energy with concepts like time dilation.
Spacetime Explained: A Simple Guide
Discover spacetime, the four-dimensional fabric of the universe that combines space and time. Learn how gravity is a curve in this cosmic fabric.
Space Telescopes: Our Eyes on the Cosmos
Discover how space telescopes like Hubble and James Webb orbit above Earth to capture stunning, unobstructed views of the universe's greatest wonders.
The Solstice Explained
Discover the science behind the solstice, the astronomical event marking the longest or shortest day of the year, driven by Earth's axial tilt.
Solar Wind Explained
Discover solar wind, the stream of charged particles from the Sun that causes auroras and can impact technology on Earth. Learn why it matters.