CITATION — REFERENCE ENTRY

25 Years of Exoplanet Discoveries — Planetary Habitability Laboratory, University of Puerto Rico at Arecibo

Revision ec0b537d-0378-4c1b-ae1d-134820d5678a · 11/5/2026, 10:48:18 PM UTC
Key
wolszczan-phl-note
Authors
Wolszczan, Alex
Issued
2016-12-30
Type
webpage
Container
Planetary Habitability Laboratory, University of Puerto Rico at Arecibo
Raw CSL JSON
{
  "URL": "https://phl.upr.edu/library/labnotes/25-years-of-exoplanet-discoveries",
  "type": "webpage",
  "title": "25 Years of Exoplanet Discoveries",
  "author": [
    {
      "given": "Alex",
      "family": "Wolszczan"
    }
  ],
  "issued": {
    "date-parts": [
      [
        2016,
        12,
        30
      ]
    ]
  },
  "accessed": {
    "date-parts": [
      [
        2026,
        11,
        5
      ]
    ]
  },
  "container-title": "Planetary Habitability Laboratory, University of Puerto Rico at Arecibo"
}

Claims

  1. The two outer planets of PSR B1257+12, announced in January 1992, have about four times the mass of Earth; the inner planet, detected in 1994, is about twice the mass of the Moon.
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