I recently watched a talk by Dr. Raj Vedam where he discussed how the Aryan invasion theory is largely a colonial construct that isn't backed by scientific evidence. After watching I did some googling to figure out what the common consensus amongst scientists is and found a lot of contradicting sources. So I was just curious what the current schools of thought are, and if either is considered the consensus amongst historians. Thanks!
Interesting question! I believe there has been a lot of debate on this, and I can link to some earlier answers on the topic.
Most straightforwardly the question is discussed here by u/Valarauko and in this comment by u/Ormond-Is-Here. And just a few months ago flaired user u/Trevor_Culley wrote about Indian and Iranian religion, with some discussion on their shared origin, in this thread.