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 ...

A map, as a 2-D object ... This is just a small part of the universe—less than 1% of the entire observable universe—but it is our galactic neighborhood. And it is good to know the geography ...

placing them outside the observable universe. The European Space Agency's Planck space mission has provided detailed maps of ...

Euclid is the wide-angle space telescope of the European Space Agency (ESA), which will map the three-dimensional structure of the observable universe. The primary goal of the mission is to solve the ...