Dark Matter

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Roman Space Telescope Could Image 100 Hubble Ultra Deep Fields at Once

Some of the Hubble Space Telescope’s most iconic images are the deep fields, which unveil myriad galaxies across the universe, stretching back to within a few hundred million years of the big bang. The galaxy tapestry was uncovered by Hubble peering at a single patch of seemingly empty sky for hundreds of hours.

Earth May Be Surrounded by Hairy Dark Matter | NASA

Earth May Be Surrounded by Hairy Dark Matter

This illustration shows Earth surrounded by theoretical filaments of dark matter called "hairs."

New Hubble Data Explains Missing Dark Matter | NASA

New Hubble Data Explains Missing Dark Matter

In 2018 an international team of researchers using the NASA/ESA Hubble Space Telescope and several other observatories uncovered, for the first time, a galaxy in our cosmic neighborhood that is missing most of its dark matter.

NASA’s Nancy Grace Roman Space Telescope will detect vestiges of sound waves that once rippled through the primordial cosmic sea. According to new simulations, Roman’s observations could extend these measurements into an unprobed epoch between the universe’s infancy and the present day.

NASA’s Roman Space Telescope to Uncover Echoes From Early Universe

NASA’s Nancy Grace Roman Space Telescope will detect vestiges of sound waves that once rippled through the primordial cosmic sea. According to new simulations, Roman’s observations could extend these measurements into an unprobed epoch between the universe’s infancy and the present day.

In measuring how dark matter's gravity distorts space, researchers found that small-scale concentrations of dark matter in clusters produce distortions 10 times stronger than expected. This evidence is based on observations of several massive galaxy clusters by Hubble and the European Southern Observatory's Very Large Telescope (VLT) in Chile.

Hubble Makes Unexpected Dark Matter Discovery

In measuring how dark matter's gravity distorts space, researchers found that small-scale concentrations of dark matter in clusters produce distortions 10 times stronger than expected. This evidence is based on observations of several massive galaxy clusters by Hubble and the European Southern Observatory's Very Large Telescope (VLT) in Chile.

Hubble Makes Surprising Find in Early Universe | NASA

Hubble Makes Surprising Find in Early Universe

the formation of the first stars and galaxies in the early universe took place sooner than previously thought, suggest new Hubble results. A European team of astronomers have found no evidence of the first generation of stars, known as Population III stars, as far back as when the universe was just 500 million years old.

Slime Mold Simulations Map Dark Matter Holding Universe Together | NASA

Slime Mold Simulations Map Dark Matter Holding Universe Together

The behavior of one of nature's humblest creatures is helping astronomers probe the largest structures in the universe. There is an uncanny resemblance between the networks single-cell slime molds create to seek food and the vast cobweb structure of filaments gravity builds to tie galaxies and clusters of galaxies together.

NASA ScienceCasts: Finding the Invisible

NASA ScienceCasts: Finding the Invisible

NASA ScienceCasts: Finding the Invisible

Hubble Detects Smallest Known Dark Matter Clumps | NASA

Hubble Detects Smallest Known Dark Matter Clumps

Dark matter forms much smaller clumps than previously known. This result confirms one of the fundamental predictions of the widely accepted "cold dark matter" theory. All galaxies, according to this theory, form and are embedded within clouds of dark matter, a hard-to-detect form of matter making up the bulk of the universe's mass.

Dark matter forms much smaller clumps than previously known. This result confirms one of the fundamental predictions of the widely accepted "cold dark matter" theory. All galaxies, according to this theory, form and are embedded within clouds of dark matter, a hard-to-detect form of matter making up the bulk of the universe's mass.

Hubble Detects Smallest Known Dark Matter Clumps

Dark matter forms much smaller clumps than previously known. This result confirms one of the fundamental predictions of the widely accepted "cold dark matter" theory. All galaxies, according to this theory, form and are embedded within clouds of dark matter, a hard-to-detect form of matter making up the bulk of the universe's mass.

Heart of Lonesome Galaxy Is Brimming with Dark Matter | NASA

Heart of Lonesome Galaxy Is Brimming with Dark Matter

Isolated for billions of years, a galaxy with more dark matter packed into its core than expected has been identified by astronomers using data from NASA’s Chandra X-ray Observatory.

Illustration of idea that missing mass is today in filaments of warm and hot gas known as the warm-hot intergalactic medium.

Where is the Universe Hiding its Missing Mass?

Astronomers have spent decades looking for something that sounds like it would be hard to miss: about a third of the "normal" matter in the Universe. New results from NASA's Chandra X-ray Observatory may have helped them locate this elusive expanse of missing matter.

Illustration of idea that missing mass is today in filaments of warm and hot gas known as the warm-hot intergalactic medium.

Where is the Universe Hiding its Missing Mass?

Astronomers have spent decades looking for something that sounds like it would be hard to miss: about a third of the "normal" matter in the Universe. New results from NASA's Chandra X-ray Observatory may have helped them locate this elusive expanse of missing matter.

Quasar Survey

Astronomers Find Dark Energy May Vary Over Time

A new study using data from NASA's Chandra X-ray Observatory and ESA's XMM-Newton suggests that dark energy may have varied over cosmic time.

diffuse white blur across a field of galaxies

Dark Matter Goes Missing in Oddball Galaxy

Galaxies and dark matter go together like peanut butter and jelly. You typically don't find one without the other.

graphic showing galaxy, other data and stars on black

Fresh Evidence for New Physics in the Universe

The most precise measurements of the expansion rate of the universe are forcing astronomers to consider something unexpected at work in the universe.