Dark Universe

Euclid is getting ready to launch.

On July 1, the European Space Agency’s (ESA) Euclid space telescope will launch from Cape Canaveral on a quest to illuminate the ‘dark universe’ dominated by dark matter and dark energy.

NASA provided funding for the construction and operation of the European mission, Euclid. The scientific equipment and data analysis are the responsibilities of the Euclid Consortium.

Airbus Defence and Space was chosen by the ESA to create the payload module, which includes the telescope, while Thales Alenia Space was picked as the prime contractor for the satellite and its service module.

pic :ESA


The NISP, or Near-Infrared Spectrometer and Photometer, detectors were supplied by NASA. The Cosmic Vision Programme of the ESA includes the medium-class mission Euclid.

There are only 4.9 percent of the universe’s visible matter, i.e. those that we can see and smell and touch; it’s made up of atoms. In the universe, this also includes all stars, gas, dust, planets, asteroids, and so on.

Dark Universe-Matter-Energy

Dark matter makes up 26.8 per cent, while dark energy is 68.3 per cent.

Dark Universe

The fact that the nature of both, and thus the nature of the overwhelming bulk of the cosmos, is unknown is “the biggest embarrassment in cosmology,” according to ESA’s Guadalupe Caas-Herrera during a pre-launch press conference on June 23.

We’re unable to see dark matter in dark universe, and it doesn’t interact with the light, but thanks to its gravitational force we can determine if there is such a thing.

In the halos of galaxies, we’re finding out that black matter is making up a large part of the mass of galaxy clusters.

In contrast, dark energy is a type of repellent energy field that permeates the universe and counteracts gravity.

Dark energy, which works in opposition to gravity and has accelerated the universe’s expansion over the past 10 billion years, tries to slow the universe’s expansion. Gravity attempts to do the opposite.

According to the mission’s project manager, ESA’s Giuseppe Racca, “Euclid will observe the past 10 billion years, from when most of the stars and galaxies had formed and when dark energy started to be dominant.”

Here are several ideas that have been proposed to explain dark matter and dark energy.

Is dark matter a brand-new category of particle, like an axion or a WIMP (weakly interacting massive particle), or can it be explained by a tweaked version of the theory of gravity?

Additionally, is quintessence a dynamic, variable energy field or the cosmic constant known as dark energy?

Dark Universe
Pic: ESA

According to the mission’s project scientist, René Laureijs of the ESA, “Euclid will measure dark energy and dark matter with unprecedented high precision and accuracy.”

The goal is to be able to tell which of these models can be excluded and which are still viable by doing this. Euclid’s rather outstanding technological capabilities will enable this.

More information regarding dark matter and dark energy will not be contained in the 170 million gigabytes of data that Euclid will collect over the course of its normal six-year mission.

It will be applied to extrapolate the universe’s future history.

Will dark energy keep expanding the universe until it creates a “Big Rip” that rips it apart? Or could dark energy become weaker, allowing gravity to take control and either maintain the status quo or bring about the Big Crunch, which would bring the universe to an end?

Euclid will aid in our understanding of the Universe’s future by working in tandem with ground-based surveys carried out by instruments like the Dark Energy Spectroscopic Instrument at the Kitt Peak National Observatory in Arizona.

However, it’s also possible that dark energy in dark universe doesn’t actually exist and that the cosmological models that assume it does are mistaken.

These models are based on Albert Einstein’s general relativity theory, which uses equations to describe the physical “laws” of the universe.

This well-known idea may not be totally accurate if future measurements by the Euclid telescope – and other planned telescopes intended to research dark energy show that dark energy is not such a continuous, pervasive factor.

In six years, the Euclid telescope, launched on July 1 by a SpaceX Falcon 9 rocket, will survey one-third of the sky beyond our galaxy, the Milky Way. Only then will astronomers have enough evidence to be sure.


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