Why Solana is Ethereum killer?

I've heard a lot of buzz about Solana being called an "Ethereum killer". But why is that? Could you please elaborate on the reasons behind this nickname? What specific features or capabilities does Solana possess that make it a potential contender in the smart contract and decentralized finance space? Also, how does Solana's scalability, security, and transaction speed compare to Ethereum? I'm curious to know if Solana's architecture and consensus mechanism offer any significant advantages over Ethereum's current setup. Could you provide some insights into this, please?