If everything in our solar system formed from the same solar nebula, why do the planets have different compositions? Herbert WichTitusville, Florida To better understand why the planets have variable ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

The Dwarf 3 is great for astrophotography beginners, but it also has lots of useful tools for more experienced hobbyists.

Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside ...

In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

The theory of Gravitational Instability, due to Jeans, is an attempt to pass directly from the symmetrical nebula to an unsymmetrical ... approach of some wandering star to the sun.

The 20-second exposure streaks the city lights below and the stars above the thin layer of ... dark region of space found between the Pelican Nebula and the Cygnus Wall, which are both part ...

Webb Telescope captures stunning new images of HH 30, revealing a dynamic protoplanetary disc where planets form.

Once dismissed as a nearby “spiral nebula” measurements of Andromeda with its embedded Cepheid star served as a stellar milepost marker ... He was partly right in that Einstein’s theory of special ...

The “Cosmic Colada” comes served in a souvenir glass shaped like an alien head. It’s the perfect way to remember your visit, ...