Have Scientists Discovered the Smallest Exoplanet Yet?

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SUMMARY

The recent discovery of the smallest exoplanet, measuring one-fifth the size of Pluto, has been reported on PhysicsWeb. This exoplanet orbits a pulsar, allowing for precise detection through Doppler shift analysis of the pulsar's clock pulse. The findings suggest the potential existence of numerous modest-sized planets around ordinary stars, expanding our understanding of planetary formation and distribution in the universe.

PREREQUISITES
  • Understanding of exoplanet detection methods, specifically Doppler shift analysis.
  • Familiarity with pulsars and their characteristics.
  • Basic knowledge of planetary sizes and comparisons, particularly with Pluto.
  • Awareness of current astronomical research and publications, such as those on PhysicsWeb.
NEXT STEPS
  • Research the methods of exoplanet detection, focusing on Doppler spectroscopy.
  • Explore the characteristics and significance of pulsars in astrophysics.
  • Investigate the implications of small exoplanets on theories of planetary formation.
  • Stay updated with recent publications on exoplanet discoveries through platforms like PhysicsWeb.
USEFUL FOR

Astronomers, astrophysics students, and anyone interested in the latest discoveries in exoplanet research and planetary science.

marlon
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Read about the discovery of the smallest (1/5th of the Pluto-size) exoplanet. This was just posted on PhysicsWeb, so it is very fresh. I also included some explanatory links, the first goes to the webpage of one of the discoverers...

https://www.physicsforums.com/journal.php?s=&journalid=13790&action=view#NEW%20PLANET%20DISCOVERED%20!


enjoy

marlon
 
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Astronomy news on Phys.org
marlon said:
Read about the discovery of the smallest (1/5th of the Pluto-size) exoplanet. This was just posted on PhysicsWeb, ...

that's interesting
four modest-size planets going around a pulsar
thanks for posting the link, marlon.

I guess that it is easier to detect small wobbles by a pulsar
because one can do dopplershift analysis very accurately
using the clockpulse of the pulsar

it makes one hopeful that there may be plenty of modest-size planets circling ordinary (not pulsar) stars as well
 
Twenty percent the size of Pluto... wow! That's quite amazing.
 

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