Why in the News?
NASA’s Mars Odyssey orbiter has captured a spectacular image of Arsia Mons, one of Mars’ largest volcanoes.
About Arsia Mons Volcano:
- Location: Arsia Mons is a massive shield volcano on Mars, located in the Tharsis region near the planet’s equator.
- Volcanic Chain: It is part of the Tharsis Montes trio, which includes Pavonis Mons and Ascraeus Mons.
- Size and Structure: The volcano rises about 20 km (12 miles) in height and spans 450 kilometres in diameter, making it one of the largest in the Solar System.
- Summit Caldera: Arsia Mons has an enormous caldera, or summit crater, measuring 120 kilometres across, which is much wider than most Earth volcanoes.
- Volcano Type: It is a shield volcano, characterised by gentle slopes formed through successive lava flows.
- Surface Features: Signs of lava channels, landslides, and possible ancient glaciers have been observed on its flanks.
- Cloud Activity: Known as the cloudiest volcano on Mars, Arsia Mons regularly develops water-ice clouds near its summit, especially at sunrise and during aphelion, when Mars is farthest from the Sun.
Its Significance:
- Recent Imaging: A new image released by NASA shows Arsia Mons piercing through morning haze, offering scientists a horizon-level view of Martian terrain.
- Scientific Importance: Observations help researchers analyse Martian weather, seasonal climate patterns, and atmospheric behaviour.
- Mission Relevance: Arsia Mons plays a key role in understanding Mars’ volcanic history, dust storm formation, and identifying future landing zones.
- Exploration Support: Data from this region improve planetary weather models and assist in safe mission planning for upcoming robotic and human missions.
Back2Basics: NASA’s Mars Odyssey Orbiter
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| [UPSC 2016] Consider the following statements:
The Mangalyaan launched by ISRO 1. is also called the Mars Orbiter Mission 2. made India the second country to have a spacecraft orbit the Mars after USA 3. made India the only country to be successful in making its spacecraft orbit the Mars in its very first attempt Which of the statements given above is/are correct? Options: (a) 1 only (b) 2 and 3 only (c) 1 and 3 only * (d) 1, 2 and 3 |
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