Two rhenium atoms approach and retreat from one another in an electron microscope video.

Some hairy cells in the nose may trigger sneezing and allergies to dust mites, mold and other substances, new work with mice suggests.

Blocking a protein caused cancer cells targeted with CAR-T cell immunotherapy to shrink rather than burst, which may help reduce inflammation.

SpaceX successfully conducted an in-flight abort test of its Crew Dragon crew capsule on Jan. 19 to test the emergency escape system for astronauts. See photos of the test here!

The first crewed flight of SpaceX's new astronaut taxi is likely just a few months away, now that a critical safety test is in the rearview mirror.

The waning crescent moon will form a triangle with the Red Planet and the bright star Antares in the morning sky on Monday (Jan. 20), and you can catch the trio in the morning sky before dawn.