ISRO has lined up a series of tests for Gaganyaan, its ambitious manned mission, this year and 2024 will be a year of "Gaganyaan readiness," said the agency's Chairman S. Somanath on Monday. Briefing reporters on ISRO's agenda for 2024, he said, "We are going to get ready for at least 12-14 missions this year. Mr. Somanath said that the …