One bird's joy is another bird's sorrow

Alzheimer’s: Protective immune cells active decades before symptom onset

ESA’s Gaia Just Took a Picture of L2 Neighbor JWST

Ocean worlds in disguise: Could there be a secret ocean on the moon Mimas? Mimas is the smallest of Saturn’s regular moons. If Mimas does have an ocean, it could signal the existence of a whole new group of “stealth” ocean worlds, which give no signs on the surface of underground water.