Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • News & Views
  • Published:


Existence is disputable


Kepler-1625b-I and Kepler-1708b-I are the most noteworthy exomoon candidates to date. A new analysis of the available data comes to a different conclusion.

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout

Fig. 1: The combined transit of an exoplanet with a natural satellite.


  1. Peale, S. J. Annu. Rev. Astron. Astrophys. 37, 533–602 (1999).

    Article  ADS  Google Scholar 

  2. Teachey, A. & Kipping, D. M. Sci. Adv. 4, eaav1784 (2018).

    Article  ADS  CAS  PubMed  PubMed Central  Google Scholar 

  3. Kipping, D. M. et al. Nat. Astron. 6, 367–380 (2022).

    Article  ADS  PubMed  PubMed Central  Google Scholar 

  4. Heller, R. & Hippke, M. Nat. Astron. (2023).

    Article  Google Scholar 

  5. Teachey A. & Kipping, D. M. In 233rd Meeting of the American Astronomical Society 404.03 (AAS, 2019).

  6. Vanderburg, A. et al. Astron. J. 156, 184 (2018).

    Article  ADS  CAS  Google Scholar 

  7. Kreidberg, L. et al. Astrophys. J. Lett. 877, L15 (2019).

    Article  ADS  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to Sascha Grziwa.

Ethics declarations

Competing interests

The author declares no competing interests.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Grziwa, S. Existence is disputable. Nat Astron 8, 155–156 (2024).

Download citation

  • Published:

  • Issue Date:

  • DOI:


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing