Observable Universe

The Big Picture

As we enter a new era of astronomical exploration, telescopes like the ALMA (Atacama Large Millimeter/submillimeter Array) are undergoing massive Wideband Sensitivity Upgrades (WSU), and the upcoming next-generation Very Large Array (ngVLA) will soon begin collecting data at an unprecedented scale. While these upgrades allow us to see the universe in more detail than ever before, they also produce a "data deluge"—a flood of information so massive and complex that it is impossible for human scientists to sort through it manually. Our working group is building the bridge between these raw signals from space and the scientific discoveries they hold.

We are developing advanced AI models that can automatically clean and prepare this raw data as it arrives from the telescope. By “teaching” computers to distinguish meaningful cosmic signals from random background noise, we can accelerate the process of turning raw radio waves into clear, science-ready images and maps. This automation ensures that astronomers spend less time fixing technical data issues and more time answering fundamental questions about how stars and galaxies form.

These AI advancements will eventually be part of CosmicCoder, a virtual research assistant designed to help astronomers navigate these vast digital archives. By making data more accessible and easier to understand, we are ensuring that the next generation of great discoveries is more efficient and readily accessible.

Research Overview

The Observable Universe working group is currently establishing a "data-to-discovery" pipeline for radio astronomy, specifically designed to address the challenges posed by high-dimensional, low signal-to-noise datasets. Modern radio telescopes generate massive volumes of raw telescope data that must undergo an elaborate and computationally intensive process of calibration and reduction, including removing interference, correcting for atmospheric effects, and varying antenna gains, before it becomes science-ready. This raw data is inherently multidimensional, and once processed, it yields massive hyperspectral cubes. These cubes are three-dimensional data structures where two dimensions represent the sky's coordinates and the third represents frequency (or velocity). As next-generation facilities like the ngVLA and the ALMA WSU come online, our goal is to support astronomical data processing by transitioning from largely manual supervision to foundational AI automation.

The first primary focus of our research is on developing new statistical methods for anomaly detection in raw telescope data. In this context, anomaly detection refers to identifying problematic data—such as Radio-Frequency Interference (RFI), hardware malfunctions, or calibration errors—that can corrupt the final image. We are working toward AI models designed to flag these "anomalies" automatically, pushing the boundaries of what can be recovered from datasets where the signal is nearly buried. By isolating and mitigating these data-quality issues at the source, we aim to fully automate the radio data processing pipeline, ensuring that only high-fidelity signals reach the final archive.

The second primary front focuses on segmentation and identification within these high-dimensional cubes. Using deep learning, we intend to automatically isolate and "mask" regions of scientific interest—such as rotating proto-stellar disks or distant evolving galaxies. Segmentation is the process of partitioning a digital image (or a 3D volume) into multiple segments to simplify its representation. Our objective is to train an AI model to accurately trace the boundaries of these complex structures, providing researchers with precisely defined targets for follow-up analysis without the need for manual inspection.

A significant offshoot of these efforts will be the automated generation of high-quality training data for AI/ML applications by the community. Historically, the "bottleneck" in astronomical AI has been the lack of "ground truth" labels—the human-verified examples needed to train neural networks. As our detection and segmentation algorithms begin to process the archives, they are expected to naturally produce a vast, self-consistent library of labeled data. This secondary outcome will abstract complex raw data into manageable, pre-labeled categories, creating a foundational resource for the broader community to train their own specialized models.

Finally, these research outputs are planned for integration into CosmicCoder, a virtual research assistant. By feeding our future automated labels and segmented data into a large language model (LLM) framework, we aim to allow researchers to query archives using natural language. This would transform the global scientific community's interaction with radio archives from a manual search process into an intuitive, AI-guided exploration.

Projects

Astronomy-Related

AI-Related

Publications/Works in Progress

Robust High-Dimensional Mean Estimation With Low Data Size, an Empirical Study

Anderson, C.; and Phillips, J. M.

Transactions on Machine Learning Research, 02. February 2025

A Topology-Preserving Coreset for Kernel Regression in Scientific Visualization

Weiran Lyu, Nathaniel Gorski, Jeff M. Phillips, Bei Wang

IEEE PacificVis 2026. April 2026. (TVCG Track)

Efficient and Stable Multi-Dimensional Kolmogorov-Smirnov Distance

Jacobs, P. M.; Namjoo, F.; & Phillips, J. M.

April 2025

Team

  • Arya Farahi

    Faculty Researcher
    UT Austin

  • Jeff Phillips

    Faculty Researcher
    University of Utah

  • Brian Mason

    Senior Researcher
    NRAO

  • Ryan Loomis

    Senior Researcher
    NRAO

  • El Kindi Rezig

    Faculty Researcher
    University of Utah

  • Ziad Al-Halah

    Faculty Researcher
    University of Utah

  • Andrew Lipnicky

    Scientist
    NRAO

  • Omkar Bait

    Postdoctoral Scholar
    NRAO

  • Ci Xue

    Postdoctoral Scholar
    NRAO

  • Josh Taylor

    Postdoctoral Scholar
    UT Austin

  • Shunyuan Mao

    Postdoctoral Scholar
    NRAO

  • Gazi Rakib

    Graduate Student
    University of Utah

  • Rabeya Hossain

    Graduate Student
    University of Utah

  • Nikesh Subedi

    Graduate Student
    University of Utah

  • Brian Kirk

    Graduate Student
    New Mexico Tech

  • Anna Dignan

    Graduate Student
    University of Virginia

  • Ramansh Sharma

    Graduate Student
    The University of Utah

  • Hamid Shafieasl

    Graduate Student
    University of Utah

  • Leah Albrow

    Graduate Student
    MIT