What is the significance of the Abell 2390 galaxy cluster image?

Question

Accepted Answer

The Abell 2390 Galaxy Cluster Image Offers Insights into Dark Matter and Galactic Scale

The image of the Abell 2390 galaxy cluster, captured by the Euclid space telescope, holds significant scientific value primarily due to its immense scale and its ability to reveal traces of dark matter. This cluster is located approximately 2.7 billion light years from Earth and contains an estimated 50,000 galaxies, with a total mass equivalent to about 10 trillion suns.

The gravitational influence of the substantial amount of dark matter within Abell 2390 is evident in the image. This invisible mass severely bends the light emitted from background galaxies, causing their images to appear distorted and curved. This phenomenon allows astronomers to indirectly detect and study the distribution of dark matter, which, along with dark energy, is believed to constitute 95 percent of the universe.

Furthermore, the Abell 2390 image provided evidence of dark matter through the detection of faint light from "orphan stars." These stars, believed to have been ejected from their host galaxies, drift in the space between galaxy clusters, forming diffuse clouds. Astronomers interpret these stellar clouds as indicators of the presence of dark matter binding them together within the larger cluster structure.

The Euclid mission, launched to investigate dark matter and dark energy, aims to map two billion galaxies across a third of the observable sky over its six-year duration. The Abell 2390 image is part of the initial set of scientific results and visual data released from this ambitious endeavor.

Reading history

Hide →

This history is cleared when the page is closed.

What is the significance of the Abell 2390 galaxy cluster image?

Loading

Was this article helpful?

Helpful

Not helpful

Report an issue

1

0

0

Share with friends