Asteroids with Highly Porous Rocks Lack Fine-Grain Regolith: Study

Perseverance’s initial images are the first ground-based evidence that Mars may have once housed a delta branching out into a lake in Jezero Crater. This study informs where Perseverance will now go sample rock, looking for signs of ancient life.

In Vitro Circadian Clock: Scientists Assemble a Biological Clock in a Test Tube To Study How It Works

Study of 6 Million Americans Finds No Significant Side Effects From mRNA Vaccines