This hub post breaks down the six key differences between stars and galaxies — from size, composition, and lifespan to brightness, motion, and structural organization. For each difference we link to a detailed article in the series with examples, visuals, and plain-language explanations so you can clearly understand how individual stars differ from vast, complex galaxies.
Explore the Largest Galaxies in the Universe with this complete list of six cosmic giants. Each entry includes diameter (kly), distance (Mly), and galaxy type to help you compare the true scale of these massive systems.
Explore the 7 Wonders of Deep Space — an illustrated hub introducing the most spectacular cosmic phenomena and linking to full deep-dive posts on each wonder. From vibrant nebulae and spiral galaxies to black holes, exoplanets, and stellar nurseries, this guide helps you discover, learn, and find stunning images and further reading.
Explore 15 significant Galaxies Discovered by the Hubble, each entry listing discovery year, measured redshift, and the notable reason it made headlines. From Hubble Deep Field treasures to unexpected high-redshift galaxies and gravitationally lensed wonders, this illustrated list explains observational context and why each discovery reshaped our view of the cosmos.
The distances in the universe are really hard to wrap our heads around. For example, the closest star to our…
It is mind-boggling to try to think how big some galaxies are. Our own galaxy, the Milky Way is about…
Astronomers estimate there are at least two trillion galaxies in the observable universe. That’s twelve zeroes by the way. Each…
The Pinwheel Galaxy is 17 times bigger than our galaxy, the Milky Way. It is one of the most easily…
The Triangulum Galaxy is one of the first targets that beginner stargazers try to look at. It is the farthest…
At the time of writing, about 6,000 planets have been confirmed outside the Solar system. But that’s just the beginning.…
