The next wearable health metric you'll obsess over may be your brain's actual level of focus.
Photos of Earth taken by the Artemis 2 astronauts reveal their perspective as they zoom farther away from our home planet than any have gone before.
The hot super-Earth exoplanet has a magma ocean and orbits a very old star.
The newly spotted quasi-moon will likely remain in its orbit for several decades to come.
The two bodies appear as bright specks amidst a field of stars in the Aries constellation.
