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 ...

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

For 3-D space, you need to be ... can learn where we live in the universe. This is just a small part of the universe—less than 1% of the entire observable universe—but it is our galactic ...

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.

Twenty-five years ago, NASA launched one of the most ambitious experiments in the history of astronomy: the Hubble Space Telescope ... pinpoint the age of the universe, revealed the birthplace ...

The world’s first oblique detonation engine (ODE) powered by standard aviation ... propulsion that could redefine the limits of air and space travel. In a series of groundbreaking experiments ...