A dazzling snapshot from ESO’s Paranal Observatory captures a rare sky parade — the Moon, a comet, and nearly every visible planet strung across the heavens. This celestial lineup is an optical ...

A rare alignment of planets and our moon will produce a celestial old-school emoticon in the pre-dawn eastern sky on April 25 ...

The planet is "crumbling to pieces," shedding the equivalent of Mount Everest’s mass every 30.5-hour orbit and will be ...

According to NASA, the planetary phenomenon will be clearest about 45 minutes before sunrise, low in the eastern sky and appearing near the moon. Venus and Saturn will be the easiest to spot — but for ...

Let's turn the sun into a telescope. In fact, we don't have to do any work—we just have to be in the right spot.

ESA's state-of-the-art Biomass mission has been designed to shed new light on the health and dynamics of the world's forests, ...

A new survey of distant galaxies undertaken by the James Webb Space Telescope (JWST) is revealing new secrets of the "cosmic noon"—when galaxies in the young universe underwent something of an awkward ...