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  • The DES Project
    • Overview
    • Science
    • Instrument
    • Survey
    • Collaboration
    • Data Access
    • For DES Members
  • News and Results
    • Publications
    • The DArchive
    • DES in the News
  • Multimedia
    • DECam Interactive
    • Photo Gallery
    • Video Gallery
  • Education
    • Dark Bites
    • Scientist of the Week
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    • Cosmo FAQ
    • Public Engagement
  • Contact Us
  • 12-0326-29D-CROP-v2
    DES
    Exploring 14 billion years of cosmic history
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    At This Art Exhibit, The Artists Are Also Astrophysicists
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    A Newly Discovered Superluminous Supernova
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    Galaxy-Galaxy Lensing in the DES Science Verification Data
    - Joseph Clampitt et al., 2016
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    Scientist of the Week
    Ting Li, Texas A&M University
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TheDESurvey @TheDESurvey
In The Dark  @TheDESurvey
One possibility for the main constituent of Dark Matter? Primordial black holes! https://t.co/v3ezWYO9Dv #DEST4TD 
Jul 20 reply retweet favorite 3 days ago
In The Dark  @TheDESurvey
How do white dwarf stars support their weight? How far is the center of the Milky Way? Find out with DarkBites… https://t.co/N3YFtWQgs2 
Jul 19 reply retweet favorite 4 days ago
In The Dark  @TheDESurvey
RT @KavliFoundation:Story @earthskyscience on peering toward the cosmic "Dark Ages" w/ @theDESurvey, when the first galaxies arose:… https://t.co/tPLMDWp8iw 
Jul 18 reply retweet favorite 5 days ago
In The Dark  @TheDESurvey
Favorite TV show? Favorite sport? Find out if you share any hobbies with our team in: DEScientist of the Week… https://t.co/bA80vBTBAm 
Jul 14 reply retweet favorite 1 week ago
In The Dark  @TheDESurvey
Tune in live today at 3pm as DEScientists chat with @DeepAstronomy about DES, GW follow up, and Milky Way dwarf galaxies! 
Jul 13 reply retweet favorite 1 week ago

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The Dark Energy Survey

3 days ago

The Dark Energy Survey

One of the biggest mysteries in Cosmology is understanding the nature of Dark Matter. It is fascinating that we could be unravelling it with DES, by monitoring the light of millions of stars in our galaxy and detecting long duration microlensing events. These could point to massive primordial black holes as the main constituent of Dark Matter. en.wikipedia.org/wiki/Primordial_black_hole #DEST4TD --
Juan Garcia-Bellido ... See MoreSee Less

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The Dark Energy Survey

4 days ago

The Dark Energy Survey

How do white dwarf stars support their weight? What's the distance to the center of the Milky Way? Find out the answers to these questions and more with DarkBites www.darkenergysurvey.org/education/darkbites/ ... See MoreSee Less

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The Dark Energy Survey

5 days ago

The Dark Energy Survey

If the Universe is the answer what is the question?

The question of course is: what is the best model that describes the Universe? Is the cosmological constant the best way to describe the current accelerated expansion of our Universe? A negative answer will certainly start a revolution as we will have to rethink our current understanding of basic physics. It is exciting to know that DES is in the process of contributing to this question by combining different cosmological probes. #DEST4TD -- Rogerio Rosenfeld (DES Brazil) ... See MoreSee Less

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The Dark Energy Survey

6 days ago

The Dark Energy Survey

My laptop feels like it is about to catch fire: I am using halo catalogs from numerical simulations to improve our knowledge of the halo mass function (HMF). The HMF is the prediction for the number of galaxy clusters a survey like DES is expected to find, as a function of their mass and distance. A task too big for my poor MacBook! #DEST4TD -- Sebastian Bocquet (Argonne National Laboratory) ... See MoreSee Less

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The Dark Energy Survey

1 week ago

The Dark Energy Survey

What's your favorite TV show? Do you play any sports? Find out if you share any hobbies with our team in: DEScientist of the Week www.darkenergysurvey.org/education/scientist-of-the-week/ ... See MoreSee Less

Scientist of the Week - The Dark Energy Survey

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Each week, we find out what’s on the minds and in the hearts of our scientists. Get to know what … Read more »

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The rise of LIGO’s space-studying super-team

June 27, 2017 12:00 am

It’s not just space-based experiments looking for signals that align with LIGO alerts. A working group called DESgw, members of the Dark Energy Survey with independent collaborators, have found a way to use the Dark Energy Camera, a 570-Megapixel digital camera mounted on a telescope in the Chilean Andes, to follow up on gravitational wave detections.​ “We have developed a rapid response system to interrupt the planned observations when a trigger occurs,” says DES scientist Marcelle Soares-Santos of Fermi National Accelerator Laboratory. “The DES is a cosmological survey; following up gravitational wave sources was not originally part of the DES scientific program.”

Dark Energy Survey Data Management group lays groundwork for next survey at NCSA

June 22, 2017 12:00 am

Understanding the 14-billion-year history of cosmic expansion requires a deep and wide map of the universe. The fainter and more distant the source of light is, the farther back in time astronomers can look to interrogate their theories on how the universe came to be. Using larger telescopes and more sensitive cameras, astronomers have begun systematically mapping the Earth's night sky to greater depths. Right now, about a quarter of the southern sky is being mapped by the Dark Energy Survey (DES), using a new, large camera on the 4-meter Blanco Telescope in Chile, which is capturing the light of hundreds of millions of galaxies over a 5,000 square degree region.

NCSA hosts free screening of ‘Seeing the Beginning of Time’

June 22, 2017 12:00 am

The National Center for Supercomputing Applications, or NCSA, will be hosting a free screening of “Seeing the Beginning of Time” at the Savoy 16 theater Wednesday, June 28 at 7 p.m. The film will be followed by a panel discussion from researchers and visualization artists. “Seeing the Beginning of Time” is said by the NCSA to take viewers “on a visually-compelling journey through deep space and time.” It follows Felipe Menanteau – a NCSA Research Scientist and Astronomy Research Professor – and his colleagues from the Dark Energy Survey, or DES. This is an international collaboration which is focused on documenting the expansion of the universe.

Our Expanding Universe: Delving into Dark Energy

June 21, 2017 12:00 am

The universe is growing a little bigger, a little faster, every day. And scientists don't know why. If this continues, almost all other galaxies will be so far away from us that one day, we won't be able to spot them with even the most sophisticated equipment. In fact, we'll only be able to spot a few cosmic objects outside of the Milky Way. Fortunately, this won't happen for billions of years. But it's not supposed to be this way – at least according to theory. Based on the fact that gravity pulls galaxies together, Albert Einstein's theory predicted that the universe should be expanding more slowly over time. But in 1998, astrophysicists were quite surprised when their observations showed that the universe was expanding ever faster. Astrophysicists call this phenomenon "cosmic acceleration." "Whatever is driving cosmic acceleration is likely to dominate the future evolution of the universe," said Josh Frieman, a researcher at the Department of Energy's (DOE) Fermilab and director of the Dark Energy Survey.

Penn physicists study galaxies to solve mysteries of dark matter

April 20, 2017 12:00 am

In the 1970s, scientists noticed something strange about the motion of galaxies. All the matter at the edges of spiral galaxies was rotating just as fast as material in the inner parts of the galaxies. But according to the laws of gravity, objects on the outskirts should be moving slower. The explanation: A form of matter called dark matter that does not directly interact with light. The researchers are working on another paper using a deeper survey of more than 100 million galaxies called the Dark Energy Survey.

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