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Optical Gravitational Lensing Experiment

Long-term variability sky survey

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 18, 2026
Entity authoritySource title only
Source-derived summary

The Optical Gravitational Lensing Experiment (OGLE) is a Polish astronomical project based at the University of Warsaw that runs a long-term variability sky survey (1992–present). The main goals are the detection and classification of variable stars, discovery of microlensing events, dwarf novae, and studies of the structure of the Galaxy and the Magellanic Clouds. Since the project began in 1992, it has discovered a multitude of extrasolar planets, together with the first planet discovered using the transit method (OGLE-TR-56b) and gravitational microlensing. The project has been led by Professor Andrzej Udalski since its inception.

Editorial summary

“Optical Gravitational Lensing Experiment” enters the record as long-term variability sky survey. Crown Archives preserves that source wording while asking what Optical, Gravitational and Lensing can confirm, complicate or overturn.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—1992—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Optical, Gravitational and Lensing.
Editorial analysis

Why this record matters

“Optical Gravitational Lensing Experiment” is worth following because a concise public description often conceals a longer documentary argument. Here, Optical, Gravitational and Lensing provides the most credible route into that argument.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Jun 18, 2026. The first chronological checks are 1992.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

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Three-step research path

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  2. Expand the search: follow Optical Gravitational Lensing Experiment primary sources, Optical Gravitational Lensing Experiment archive and Optical research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from “Optical Gravitational Lensing Experiment” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.