News
- Health & Medicine
Vitamin D deficiency
Parkinson’s disease patients are more commonly lacking in vitamin D than Alzheimer’s patients or healthy people.
- Space
A comet doubleheader
Astronomers have discovered the first comet that appears to be a contact binary — two chunks somehow held together by a narrow neck of material.
- Space
Askew in the outer solar system
A chunk of ice orbiting backwards around the sun could offer hints about the mysterious origin of some comets.
- Space
Sniping at Jupiter
Giant Jupiter, often thought to protect the inner planets from space debris, may sometimes acts as a sniper, hurling material toward Earth.
