Altcoin season is the time when other cryptocurrencies like Ethereum, Solana, and others start to grow much faster compared to Bitcoin. This means that people begin to invest in altcoins instead of Bitcoin. When Bitcoin's market influence decreases and altcoin prices start to rise, it is referred to as alt season. During this time, more people buy and sell these crypto coins, leading to further increases in their prices. In the past, when Bitcoin went up, shortly after, altcoins also saw significant gains. There are still some similar signs appearing, so many investors believe that a good time for altcoins may come soon. But remember, the crypto market is volatile, so it is essential to make decisions wisely.