Perseverance discovers egg-like spherules in a Mars rock, now NASA is forming a strategy to investigate this in more detail.

Evidence of this activity is still visible today within ... In some locations there are land plants and reptile tracks. This layer of rock, known as the Redwall Limestone, forms a sheer cliff ...

This hidden geological layer, located between 254 and 410 miles ... of 205 miles (330 kilometers), hinting at a massive basalt rock buildup deep inside the planet. According to the seismologists ...