The failure of India's own cryogenic rocket launch was certainly disappointing. But such setbacks are not uncommon in space programmes. It is not feasible to test a cryogenic engine in vacuum conditions on the ground. Let us support our scientists' bid to fly a GSLV with indigenous cryogenic engine within one year.

N.R.U.K. Kartha, Thiruvananthapuram

That the indigenous cryogenic engine in GSLV-D3 failed to ignite and the vehicle tumbled into the sea was unfortunate. ISRO should do a thorough analysis of what went wrong. At the same time, let us not demoralise our scientists by harping on the failure.

K.J. Sudheer, Bangalore

Our scientists deserve praise for their efforts in developing indigenous cryogenic technology. The flight was successful up to the end of the second stage. ISRO should not lose hope and it should move on. Did not Chandrayaan-1, despite its premature end, discover the existence of water molecules on the moon's surface?

E. Rajakumar Arulanandham, Palayamkottai

Even the most advanced countries with vast resources at their command failed many times before mastering the complex cryogenic engine technology.

Narayan Paga, Dharwad

We have to go miles to match the developed countries in space technology. We also have a lot to learn from China. The government should be more generous in funding scientific research.

Jetling Yellosa, Nizamabad

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