Cosmology

A New, More Accurate Measurement for the Clumpiness of the Universe

Cosmologists are wrestling with an interesting question: how much clumpiness does the Universe have? There are competing but not compatible…

4 weeks ago

Euclid Begins its 6-Year Survey of the Dark Universe

ESA's Euclid mission was launched in July 2023 and has already sent home test images showing that its instruments are…

1 month ago

How Does the Cosmic Web Drive Galaxy Evolution?

Galaxies experience a long strange trip through the cosmic web as they grow and evolve. It turns out that the…

1 month ago

Dust Ruins Another Way of Measuring Distance in the Universe

Astronomers are always searching for new ways to measure distance in the Universe, especially at the greatest distances where less…

1 month ago

The JWST Solves the Mystery of Ancient Light

The very early Universe was a dark place. It was packed with light-blocking hydrogen and not much else. Only when…

2 months ago

Astronomers Rule Out One Explanation for the Hubble Tension

Astronomers measure the Universe's expansion rate and have found a discrepancy between the speed nearby versus the speed measured in…

2 months ago

1,500 New Type 1A Supernova Found as Part of the Dark Energy Survey

Supernova explosions are fascinating because they're so cataclysmic, powerful, and awe-inspiring. They're Nature's summer blockbusters. Humans have recorded their existence…

2 months ago

Webb Sees a Supernova Go Off in a Gravitationally Lensed Galaxy – for the Second Time

Nature, in its infinite inventiveness, provides natural astronomical lenses that allow us to see objects beyond the normal reach of…

3 months ago

Why Was it Tricky to Know the Distances to Galaxies JWST Was Seeing?

One of the chief objectives of the James Webb Space Telescope (JWST) is to study the formation and evolution of…

3 months ago

If Our Part of the Universe is Less Dense, Would That Explain the Hubble Tension?

In the 1920s, Edwin Hubble and Georges Lemaitre made a startling discovery that forever changed our perception of the Universe.…

3 months ago