COSMOS: Galaxy Photometry Catalog Spanning 75% of Universe Age

COSMOS is an astronomical survey catalog designed to probe galaxy formation and evolution. The survey covers a 2 square degree equatorial field with imaging from major space and ground-based telescopes. It contains photometric data for over 2 million galaxies, spanning 75% of the age of the universe.

Use Cases

• Model galaxy formation and evolution based on photometric redshift data.
• Analyze the correlation between galaxy properties and large-scale structural environment.
• Train machine learning models for galaxy classification using multi-band photometry.
• Conduct cosmological studies based on the deep, wide-field survey coverage.

Strengths

• Contains data for over 2 million galaxies.
• Covers a 2 square degree field with imaging from multiple major telescopes.
• Spans a temporal range covering 75% of the age of the universe.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• File formats are BIN and HTML, which may require specialized tools for access.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Imaging data collected from space-based (Hubble, Spitzer, GALEX, XMM, Chandra) and ground-based telescopes (Subaru, VLA, ESO-VLT, UKIRT, NOAO, CFHT).

Time Range

Spans 75% of the age of the universe.

Freshness

Last updated 2026-03-13 18:51:24.212148; freshness should be verified.

Geography

Covers a 2 square degree equatorial field.