A type of hydrogen that doesn't interact with light could explain how long neutrons live and reveal the identity of the ...

Even though the atom is visible, it’s still not the easiest to see. If you look very closely at the center of the photo, you’ll see a faint blue dot. That’s the strontium atom, illuminated ...

A visible line of planets has for weeks been the talk of astronomers and hobbyist stargazers who have sought to catch a sight of our solar system's worlds. Online chatter and a frenzy of media ...

Seven planets -- Mars, Jupiter, Uranus, Neptune, Mercury, Saturn and Venus -- will be visible simultaneously and look like they're all aligned when seen from Earth after sunset. A long awaited ...