These are giant, circular arrangements of galaxies found all throughout space. They're actually ... exceedingly large ...

The observable universe is a ball-shaped region of the universe comprising all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time, because ...

New research suggests that dark energy isn't needed to explain the acceleration in the expansion of the universe — instead suggesting giant voids in space are creating an illusion. Dark energy ...

Russian scientists have unveiled an ambitious new plasma engine that could drastically ... It is the most common element in the universe and can potentially be harvested in space.

Photo: Stoke Space Other things Stoke did to improve the design of the engine was to install a metal heat shield right into the engine, but also to gift this new piece of hardware with active ...

The mission's flight team applauded a successful lunar orbit insertion after engine shutdown was confirmed ... beams home gorgeous views of Earth from space (photos) Flight controllers will ...

Scientific studies here could enhance our understanding of the solar system, the possibility of life beyond Earth and the evolution of the universe ... is going to be on space tourism.

There's a lot hiding in the universe's dark corners. Interstellar dust clouds and inky stretches of deep space can appear dull to ordinary telescopes. But to a car-size telescope 26 million miles ...

It's been a long, strange trip for this universe we call home. Follow its development and take a peek at what's ahead with the Mysteries of Deep Space interactive timeline. Simply click on the ...

In Big Bang cosmology, the observable universe consists of the galaxies and other matter that can, in principle, be observed from Earth in the present day—because light (or other signals ...