A recent study reveals four previously unknown primordial open cluster groups in the Milky Way, challenging traditional ...

Jupiter joins Mercury in early twilight as Mars lingers with Leo after dark. Saturn is visible in the morning, meeting ...

Red supergiant Antares, having just passed opposition on May 30, begins June low in the southeast at dusk. The morning ...

The speedy solar storm arrived in style, sparking stunning aurora displays as far south as California and New Mexico.