Q. James Webb telescope is often called as a successor to Hubble telescope. In this respect, consider the following statements:
1. It is an international collaboration between NASA, JAXA and ROSCOSMOS
2. It will be positioned at the second Lagrange point.
3. It will primarily look at the universe in the infrared wavelength.
Select the correct answer from the codes given below:
Red Book
Red Book

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2 and 3

Answer: B
Notes:
  • Statement 1 is incorrect: It is an international collaboration between NASA, European Space Agency (ESA), and the Canadian Space Agency. 
  • Statement 2 is correct: Hubble is in a very close orbit around the earth, while Webb will be 1.5 million kilometers (km) away at the second Lagrange (L2) point. 
  • Statement 3 is correct: Webb will primarily look at the Universe in the infrared, while Hubble studies it primarily at optical and ultraviolet wavelengths (though it has some infrared capability) 

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