First moon-like body outside our solar system discovered, challenging planet formation theories
GS3Economy · S&T · Environment · Security· Space technology (ISRO, missions)· Prelims·
Why in news
The discovery of a moon-like body orbiting a brown dwarf outside our solar system challenges current planetary formation theories and definitions of celestial bodies.
Background
An international team used the CRIRES+ infrared spectrograph on the European Southern Observatory’s Very Large Telescope to observe the brown dwarf CD-35 2722 B. The discovery revealed a body with at least 0.9 Jupiter masses orbiting every 170 days at a distance of 73 light-years.
Facts for Prelims
- S&TBrown Dwarf: A substellar object more massive than a planet but less massive than a star.
- S&TCRIRES+: An infrared spectrograph used for high-resolution observations of celestial bodies.
- FactThe discovered body has a mass of at least 0.9 Jupiter masses and an orbital period of 170 days.
- PlaceCD-35 2722 B is located approximately 73 light-years away from Earth.
For Mains
Q. How do discoveries of exoplanetary systems and brown dwarf satellites challenge existing models of planetary formation and the search for extraterrestrial life?
Dimensions to cover in your answer
- re-evaluating planetary formation models
- expansion of celestial definitions
- implications for astrobiology
Keywords: Exoplanetary systems · Brown Dwarf · Planetary Formation · Astrobiology · Spectroscopy
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