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80TB of astronomy data made accessible: Multimodal Universe crossmatching now works on a laptop

The Multimodal Universe (MMU) is a massive dataset pooling 80TB+ of data from over 30 astronomical surveys. Its key feature is crossmatching — linking observations of the same celestial object across different surveys. Previously, this required downloading large data chunks to local disk. The author and collaborators from the UniverseTBD and Hugging Science Discord communities converted the MMU to the parquet-based HATS format, enabling crossmatching using the LSDB and Hugging Face ecosystems directly from a laptop without needing a computing cluster.

Mike Smith8d ago13 min readen
Read on huggingface.co

Key quotes

The Multimodal Universe (MMU) pools together 80TB plus of data from over 30 astronomical surveys into one place.
Crossmatching (linking observations of the same object across surveys) is its killer feature, but until now it required downloading hefty chunks of data to local disk.
We got tired of needing a cluster just to run a crossmatch, so we gathered in the UniverseTBD and Hugging Science Discord servers to fix that.
We've converted the MMU to the parquet-based HATS format so that you can use the LSDB and Hugging Face ecosystems to...

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