Which of the following pairs is/are correctly matched? Spacecraft : Purpose 1. Cassini-Huygens : Orbiting the Venus and transmitting data to the Earth 2. Messenger : Mapping and investigating the Mercury 3. Voyager 1 and 2 : Exploring the outer solar syst

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Q: 68 (IAS/2014)

Which of the following pairs is/are correctly matched? Spacecraft : Purpose
1. Cassini-Huygens : Orbiting the Venus and transmitting data to the Earth
2. Messenger : Mapping and investigating the Mercury
3. Voyager 1 and 2 : Exploring the outer solar system
Select the correct answer using the code given below.
The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft.” The experiment in question refers to (a) Voyager-2 (b) New Horizons (c) LISA Pathfinder (d) Evolved LISA

question_subject: 

Science & Technology

question_exam: 

IAS

stats: 

0,79,77,17,79,31,29

keywords: 

{'voyager': [0, 0, 0, 1], 'spacecraft': [0, 0, 2, 2], 'outer solar system': [0, 0, 0, 1], 'venus': [1, 0, 2, 0], 'cassini': [0, 0, 2, 1], 'mapping': [1, 0, 1, 2], 'data': [1, 1, 7, 9]}

The correct answer is 2 and 3 only.

Explanation:

1. Cassini-Huygens: It was a joint mission by NASA, the European Space Agency (ESA) and the Italian Space Agency (ASI) to study Saturn and its system, including its rings and natural satellites. It did not orbit Venus or transmit data to Earth.

2. Messenger: It was a NASA mission to orbit and explore Mercury, the innermost planet of the solar system.

3. Voyager 1 and 2: These are NASA missions to study the outer solar system, including Jupiter, Saturn, Uranus, and Neptune. They also explored the outer regions of the heliosphere and interstellar space beyond the solar system.