Topics from October 2017 What were Marconi’s contributions to science? Posted by Keshav Jain on Friday, October 27. 2017 Who was Aryabhatta? Posted by Keshav Jain on Friday, October 27. 2017 When the guns were first made? Posted by Keshav Jain on Friday, October 27. 2017 History of Astronomy Posted by Keshav Jain on Thursday, October 26. 2017