Euclid Space Telescope Will Explore Dark Energy

The Euclid Space Telescope’s mission is to explore the composition and evolution of dark energy. Find out how its observations of over a billion galaxies aim to solve what scientists call cosmology’s greatest mystery.

At the start of the 20th century, cosmologists were beginning to think they were quite close to having our universe figured out. Classical physics had explained so much about planets, stars and the galaxy that it seemed only a matter of time until science solved any remaining mysteries.

It hasn’t turned out that way. Since then, astronomers have discovered that there are as many as 2 trillion galaxies outside our own Milky Way.

What’s more, those galaxies are all moving away from us and from one another, meaning that space itself is expanding. This disproved the prevailing steady state model in which the universe had always existed and could neither expand nor contract.

Universe’s Expansion Suggests Beginning at Big Bang

Instead, the universe’s expansion indicates it must have had a beginning. At the moment the universe began, which we now call the Big Bang, everything…