“black‑hole stars.” The object, observed by the James Webb Space Telescope, dates to roughly 660 million years after the Big Bang and exhibits characteristics that cannot be reconciled with ordinary stellar physics. The find emerged from the Mirage...

Physics, does not seek to dismantle Einstein’s framework, which remains indispensable for local phenomena ranging from the Big Bang to the observation of black holes. Instead, the researchers suggest that the theory may require a subtle adjustment when...

the EAZY code suggested a redshift near z ≈ 4.4, which would have placed A1 within the first 1.5 billion years after the Big Bang. However, the galaxy’s extended shape caused standard aperture photometry to miss a substantial fraction of its light,...

active, massive black holes. Located in J0148-4214, a system observed as it appeared just 1.3 billion years after the Big Bang, this discovery offers a new window into the mysterious processes that allowed supermassive black holes to reach such extreme...

3 imagery and Lunar Reconnaissance Orbiter data) Peering into the Cosmic Dark Ages Approximately 380,000 years after the Big Bang, the universe entered a transformative state. Protons and electrons fused to form neutral hydrogen, filling the cosmos with...

11.7 billion years ago, placing it in an era when the universe was in its relative infancy, just 2 billion years after the Big Bang. The findings, published in The Astrophysical Journal, provide a rare glimpse into the mechanics of stellar death within...

could offer vital clues about the high-energy conditions that dominated the universe in the immediate aftermath of the Big Bang. Mapping the Geometry of Spacetime Crystals The concept of a spacetime crystal relies on the fundamental principles defined...

mysterious, compact objects may be drifting in close proximity to one another. Existing just a billion years after the Big Bang, these dual systems offer a potential glimpse into the chaotic environment where supermassive black holes may have first...

cosmology is explaining how black holes reached millions or billions of solar masses within the first billion years of the Big Bang. Conventional models, which rely on the collapse of standard massive stars, struggle to account for such rapid growth...

they do not. Observations of the cosmic microwave background, the relic radiation from about 380,000 years after the Big Bang, imply a higher S8 value. Weak gravitational lensing surveys, which measure how foreground matter subtly distorts the shapes of...

it is arranged. That is where this new map becomes so important. The Early Universe Was Almost Smooth Shortly after the Big Bang, the universe was hot, dense, and surprisingly uniform. Matter was spread out almost evenly. There were no stars, no...

the first stars ever formed, at least in theory. They were made almost entirely of hydrogen and helium, shortly after the Big Bang. None have been seen directly, but models suggest they existed and lived fast, violent lives. Their explosions likely...

now. Euclid’s survey has added 31 previously unknown quasars that existed within the first billion years after the Big Bang, including 12 with redshifts greater than 7. The two most distant members of the new sample are EUCL J172902.75+641018.1 (z =...

National Laboratory The survey’s power stems from its use of the cosmic microwave background—the faint afterglow of the Big Bang—as a backlight. When this ancient radiation traverses a massive cluster, high‑energy electrons in the hot gas imprint a...

JWST reveals a distant early‑universe galaxy with unexpected features that upend traditional ideas of how galaxies form. Using the James Webb Space Telescope, astronomers have identified a barred spiral galaxy that pushes the boundaries of how early...

story of our universe begins with light. Not the light of stars, because stars came later, but with the afterglow of the Big Bang that still fills the sky today. This dim radiation is called the Cosmic Microwave Background and it carries the imprint of...

material, such as dust clouds and molecular gas. They were also essential for mapping the faint glow left over from the Big Bang. Fast events were harder to catch. The instruments were sensitive, but they usually looked at small patches of sky. That...

as measurement techniques have sharpened. One approach extracts the expansion rate from the relic radiation of the Big Bang, while another relies on nearby distance markers such as pulsating stars and supernova explosions. The two methods continue to...

idea emerged while he was drafting his 2024 book, The Universal History of Us (Penguin), which maps the cosmos from the Big Bang to the present day. Why Our Closest Relatives Won’t Take Over Chimpanzees and bonobos share many human traits—opposable...

can be examined in greater detail. The Saguaro, with a redshift of roughly 2, existed about 3.3 billion years after the Big Bang, offering a window into a formative epoch of cosmic history. Scientists propose a developmental pathway for little red dots...