After a year featuring a brilliant green comet, a rare eclipse at sunrise, perfect views of the planets, a traveler from deep ...

The Moon is in its waxing crescent phase tonight on January 21, 2026, being only two days old, and is at 7% illumination. Because of this, the majority of the night sky will be in deep darkness. This ...

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...

February brings several special events, including a rare "occultation," and a planetary parade of six planets.