Atacama Cosmology Telescope

A long-simmering disagreement over the universe's present-day expansion rate shows no signs of resolution, leaving experts increasingly vexed

The new map looked at light from just after the universe was born.

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About half of the non-dark matter in the universe cannot be accounted for by stars and galaxies alone. Now, scientists say previously undetected clouds of hydrogen gas could finally reveal it.

The University of Tokyo Atacama Observatory (TAO), the world's tallest optical-infrared telescope, opened after 26 years of planning and construction in Chile's Atacama Desert, offering high-resolution celestial images.

Jo Dunkley is a leading researcher into the origins and evolution of the universe and professor of physics and astrophysical sciences at Princeton University.

The Atacama Cosmology Telescope could help resolve some cosmic discrepancies: How fast the universe is expanding and how evenly matter is distributed.

Using data from NSF's Atacama Cosmology Telescope, astronomers have produced the most detailed map of dark matter distributed across one quarter of the sky.

Scientists hunted for 6 years and found nothing significant.

New observations with the Atacama Cosmology Telescope in Chile reveal the earliest-ever "baby pictures" of our universe, showing some of the oldest light we can possibly see.

If our 13.8 billion-year-old cosmos could be considered middle-aged, researchers note these new images captured around its 380,000th birthday represent a snapshot of the universe as a newborn.

The finest ever map of the cosmic microwave background - the faint evidence of the universe's early form - has yielded precise confirmation of the age of the cosmos and its rate of expansion. But for some scientists, the findings offer a frustrating lack of clues to major cosmological mysteries

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In the 1960s, astronomers began noticing a pervasive microwave background visible in all directions. Thereafter known as the Cosmic Microwave Background (CMB), the existence of this relic radiation confirmed the Big Bang theory, which posits that all matter was condensed onto a single point of infinite density and extreme heat that began expanding ca. 13.8 billion years ago.

In the early 1900s, Albert Einstein proposed the theory of general relativity, which challenged everything scientists believed they understood about the...

A newly created dark matter map brings even more support to Einstein's theory of general relativity and how gravity affects the universe.

Research by the Atacama Cosmology Telescope collaboration has culminated in a significant breakthrough in understanding the evolution of the universe.

The universe is about 13.8 billion years old, but how do we know that?

Well… not everything. But also, not not everything

"This process is like a cosmic CT scan, where we can look through different slices of cosmic history and track how matter clumped together at different epochs."