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The European Southern Observatory designs, builds & operates world-class observatories on the ground for the benefit of society   🇨🇱 @ESO_Chile

Jul 22, 2021, 5 tweets

1/ Astronomers made the first clear detection of a moon-forming disc around an exoplanet, using @ALMAObs , in which ESO is a partner.

🔗eso.org/public/news/es…
Credit: ALMA (ESO/NAOJ/NRAO)/Benisty et al.

2/ The disc in question, called a circumplanetary disc, surrounds the exoplanet PDS 70c, one of two giant, Jupiter-like planets orbiting a star nearly 400 light-years away.

Credit: @ESO /L. Calçada, ALMA (ESO/NAOJ/NRAO)/Benisty et al.

3/ Astronomers had found hints of a “moon-forming” disc around this exoplanet before but, since they could not clearly tell the disc apart from its surrounding environment, they could not confirm its detection — until now.

Credit: ALMA (ESO/NAOJ/NRAO)/Benisty et al.

4/ The observations will shed new light on how moons and planets form in young stellar systems.

Credit: @ESO , N. Risinger (skysurvey.org), DSS, ALMA (ESO/NAOJ/NRAO)/Benisty et al.
Music: Astral electronic.

5. An even deeper understanding of the planetary system will be achieved with ESO’s Extremely Large Telescope #ELT, currently under construction on Cerro Armazones. #BiggestEyeOnTheSky Read more at elt.eso.org

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