Here's when to see a pair of massive letters shining on the lunar surface around May's first quarter moon phase.

Long before the full moon rises, shifting sunlight transforms the lunar surface into one of the sky's best telescope targets.

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As humanity continues extending its presence beyond Earth, the Moon is no longer simply a destination. It is the next layer ...

Neptune has a complicated life story, and its moon Nereid might be the only one left standing from the planet’s ...

On May 22, the moon will reach its first quarter phase in the meticulous and resourceful sign of Virgo ...

The rare isotope helium-3 is one of Earth’s most precious commodities—so precious, in fact, that it might prove profitable to ...

Are you familiar with the constellation Crater the Cup? If not, don’t worry — you’re about to spot it tonight. This mid-sized constellation, measuring 53rd in size among the 88 official constellations ...

The phenomenon of a Full Moon arises when our planet, Earth, is precisely sandwiched between the Sun and the Moon. This ...