Theory:

     Thereafter it took just one week for ‘Comet Dutta’ to be recognized and so named. For the IIA confirmed the findings and communicated it worldwide and, according to the accepted practice, the new comet was named after its discoverer.
 
     This brought in unwelcome publicity to the introvert Duttada. There were numerous receptions and functions to attend. Returning from one such ceremony Duttada muttered to himself in disgust, “I almost wish I had not discovered this comet.”
Explanation:
 
After discovering a new comet, Duttada became a well-known and well-recognized figure around the world in a week's time. After verifying his finding, the IIA named the comet after the discoverer, as was customary. As a result, the comet was given the moniker 'Comet Dutta'.
 
Duttada had been living a nice, tranquil life as a retired old person on the outskirts of Calcutta until then. Situations began to shift once he got popular, which was not in keeping with his personality. He was a modest, introverted person who never desired fame and instead preferred to spend his time alone, preoccupied with his own job. Even though he had aimed to detect a comet, his sudden popularity was unexpected. He despised the fact that he was popular. He was invited to a number of occasions and receptions. On his way back from a ceremony, he began to mutter, making a point that the comet had not been discovered by him.
 
Meaning of difficult words:
 
S.No
Words
Meaning
1.
Introvert
Refers to a quiet, shy person who prefers to be alone
2.
Recognized
To know, identify or notice something
3.
Numerous
Refers to something which exists in large numbers
Reference:
National Council of Educational Research and Training (2008). The Comet I - Jayant Narlikar (pp. 73-80). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi.