YZ Ceti b
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Context
- This October, the constellation of Cetus would be visible to the unaided eye.
- For this, one would be looking in the general direction of an alien world called YZ Ceti b.
About
- YZ Ceti b is a rocky, earth-sized exoplanet (a planet that orbits a star other than our sun) rotating around a small red dwarf star.
- It orbits an M-type star.
- Its mass is 0.7 Earths, it takes 2 days to complete one orbit of its star, and is 0.01634 AU from its star.
- Its discovery was announced in 2017.
- YZ Ceti, is barely 12 light-years from Earth.
All of the planets in our solar system orbit around the Sun. Planets that orbit around other stars are called exoplanets.
EXOPLANET: https://www.iasgyan.in/daily-current-affairs/exoplanet-hd106906-b
WATER WORLDS: https://www.iasgyan.in/daily-current-affairs/water-worlds
PRACTICE QUESTION Q. Which of the following methods are used to detect exoplanets? a) Measuring the dimming of a star that happens to have a planet pass in front of it, called the transit method. b) Monitoring the spectrum of a star for the tell-tale signs of a planet pulling on its star and causing its light to subtly Doppler shift. 1. Only a 2. Only b 3. Both a and b 4. None of the above. Correct Answer: Option 3 |