Insights Uncovered: Dark Energy Survey Reveals Decade-long Discoveries on Universe Expansion

Stunning Image of a Supernova

A breathtaking image shows one of the supernovas discovered in the Dark Energy Survey (left) compared to a distant quasar (right). Image credit: DES Collaboration/NOIRLab/NSF/AURA/M. Zamani. This is an incredible visual display of the universe’s expansion and the role that dark energy continues to play in this cosmic dance.

The Dark Energy Camera conducted a survey of over 1,500 supernovas that has placed strong constraints on the accelerating expansion of the universe.

The results suggest that the mysterious force responsible for cosmic acceleration, dark energy, may vary in density over time, defying the standard model of cosmology which called into question by the findings.

The results were presented at the 243rd meeting of the American Astronomical Society, and are the most extensive sample of supernovas ever harvested by a single instrument. These fascinating findings are helping to unravel the complex mystery of dark energy and the universe’s accelerating expansion.

To gather this data, the 570-megapixel Dark Energy Camera built by Fermilab observed the sky over Earth for 758 nights, observing 2 million distant galaxies within which thousands of supernovas were spotted.

These results are consistent with the standard model of cosmology, the so-called “Lambda cold dark matter” model, but also leave breathing room for more complex models of the universe. Read More