A sheet of dark matter lying beyond the boundary of the Local Group is responsible for this.

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...

Learn how dozens of galaxies may have merged into a giant galaxy shortly after the Big Bang.

Artist's conception of early starbursting galaxies. UC Davis astronomers collaborated on new simulations showing how bright galaxies could emerge early in the universe. Stars and galaxies are shown in ...

Discover seven unusual galaxies defying scientific predictions, from impossibly bright early universe objects to astrophysics ...

As their name suggests, ultradiffuse galaxies, or UDGs, are dwarf galaxies whose stars are spread out over a vast region, resulting in extremely low surface brightness, making them very difficult to ...

Computer simulations show that the standard model of cosmology isn’t, in fact, broken. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...

A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. Can we generate a way to interact with dark ...

(via Dr. Becky) Wherever we look in the Universe we see spiral galaxies. 70% of all galaxies today have this spiral structure that show up in their stars and their gas that’s used to make more stars.

Six massive galaxies discovered in the early universe are upending what scientists previously understood about the origins of galaxies in the universe. Six massive galaxies discovered in the early ...