Tag Archive for 'Cosmic dawn'

This artist’s impression shows a field of Population III stars as they would have appeared a mere 100 million years after the Big Bang. Image credit: NOIRLab / NSF / AURA / J. da Silva / Spaceengine.

Rocky Planets May Have Started Forming Just 100 Million Years after Big Bang

Aug 12, 2026 by News Staff

New simulations suggest supernova explosions of the Universe’s first stars scattered the ingredients for rocky planets only 100 million years after the...

Cosmological Radio Signal Will Help Astronomers Detect Universe’s First-Generation Stars

Jun 20, 2025 by News Staff

The first generation of stars (Population III) must have formed from the unenriched gas that permeated the infant Universe. These stars produced the first...

The Firefly Sparkle galaxy is in the process of assembling and forming new stars, existed about 600 million years after the Big Bang, and weighs about the same as our Milky Way Galaxy if we could wind back the clock to see our Galaxy as it developed. Image credit: NASA / ESA / CSA / STScI / C. Willott, NRC-Canada / L. Mowla, Wellesley College / K. Iyer, Columbia.

Webb Discovers Actively Forming Low-Mass Galaxy in Early Universe

Dec 12, 2024 by News Staff

Nicknamed the Firefly Sparkle, the newly-discovered galaxy existed approximately 600 million years after the Big Bang and consisted of a least 10 star...

An artist’s impression of HSC J121503.42-014858.7 and HSC J121503.55-014859.3 quasars. Image credit: Izumi et al., doi: 10.3847/1538-4357/ad57c6.

Astronomers Discover Spectacular Galactic Merger in Early Universe

Sep 2, 2024 by News Staff

Using the Atacama Large Millimeter/submillimeter Array (ALMA) and the Subaru Telescope, astronomers have discovered a pair of merging gas-rich galaxies...

This image, taken with the Hyper Suprime-Cam on the Subaru Telescope, shows a pair of quasars in the process of merging: HSC J121503.42-014858.7 (C1) and HSC J121503.55-014859.3 (C2). Image credit: NOIRLab / NSF / AURA / T.A. Rector, University of Alaska Anchorage & NSF NOIRLab / D. de Martin, NSF NOIRLab / M. Zamani, NSF NOIRLab.

Astronomers Discover Most Distant Pair of Merging Quasars Yet

Jun 18, 2024 by News Staff

Astronomers have discovered a pair of merging quasars seen only 900 million years after the Big Bang. Not only is this the most distant pair of merging...

This artist’s impression shows the evolution of the Universe beginning with the Big Bang on the left followed by the appearance of the Cosmic Microwave Background. The formation of the first stars ends the cosmic dark ages, followed by the formation of galaxies. Image credit: M. Weiss / Harvard-Smithsonian Center for Astrophysics.

First Generation of Stars Emerged 250-350 Million Years after Big Bang, Astronomers Say

Jun 24, 2021 by News Staff

A team of astronomers from the United Kingdom and the United States has examined six of the most distant galaxies currently known and found that the distance...