NASA may be preparing to deliver some monumental news about Mars after surprisingly calling for a rare news conference on Wednesday. Officials with the space agency said they plan to discuss a 'new finding' by the Perseverance rover, which has been on the Red Planet since 2021. The discovery involves a rock called 'Sapphire Canyon,' collected by the rover in July 2024 from an ancient river system in a Martian area called Neretva Vallis. Scientists are excited because this rock might contain 'biosignatures,' which are chemical clues that could hint at ancient microbial life on Mars. >>> While NASA has...