Note4Students
From UPSC perspective, the following things are important :
Prelims level: Antares (Jyeshtha), Occultation
Mains level: NA
Why in the news?
- The Bengaluru-based Indian Institute of Astrophysics (IIA) captured the moon passing in front of Antares, a bright red star.
- Moon occasionally occults bright stars such as Antares and planets as it orbits the Earth once a month.
About Antares (Jyeshtha)
- Antares is a red supergiant star also called ‘Alpha Scorpii,’ located in the constellation of Scorpius.
- It is visible in the southern sky during the summer months in the northern hemisphere.
- It is often referred to as the “heart of the scorpion” due to its location within the Scorpius constellation and its striking red color.
- It is a massive star, with a diameter estimated to be around 700 times that of the Sun.
- It has a relatively low surface temperature compared to other stars, which gives it its distinctive red color.
- The distance to Antares from Earth is approximately 550 light-years, making it one of the closest red supergiant stars to our solar system.
What is Occultation?
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PYQ:[2012] A person stood alone in a desert on a dark night and wanted to reach his village, which was situated 5 km East of the point where he was standing. He had no instruments to find the direction, but he located the pole-star. The most convenient way now to reach his village is to walk in the _______. (a) Direction facing the pole-star (b) Direction opposite to the pole-star (c) Direction keeping the pole-star to his left (d) Direction keeping the pole-star to his right |
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