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 ...

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 ...

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

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 ...

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 ...

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 ...