Science

A big study to help Medicare officials decide whether to cover brain scans to check for Alzheimer’s missed its goals for curbing healthcare costs.

Directed by Marjane Satrapi, “Radioactive” stars Rosamund Pike as Marie Curie, still the only woman to win the Nobel Prize twice. The biopic also valorizes the role of science in understanding the world in an unexpectedly heroic way.

Perseverance, NASA’s newest Mars rover, is on its way to the red planet after a successful launch early Thursday from Kennedy Space Center in Florida.

A tropical storm barreling toward Florida could delay this weekend’s planned return of the first SpaceX crew.

Perseverance, NASA’s newest Mars rover, is living up to its name. It has already survived a hurdle no previous rover has had to face: a global pandemic.

To travel to another planet and put a rover on its surface now feels like a rebuke to the powerlessness we feel here at home.

An experimental blood test was highly accurate at distinguishing people with Alzheimer’s from those without it in several studies, scientists report.

People most at risk for disease are often left out of clinical trials. But demand grows for assurances that the COVID-19 vaccine trial be diverse.

A telescope has captured a family portrait of another solar system with two planets posing directly for the cameras while orbiting a star like our sun.

China has launched its most ambitious Mars mission yet in an attempt to join the United States in successfully landing a spacecraft on the red planet.

Skeptics say: Why wear masks if they don’t filter out all coronavirus? Scientists say: Because it could mean less severe illness.