One of the closest and brightest globular clusters visible from Earth, M22 contains hundreds of thousands of stars packed into a tight, elliptical shape about 10,000 light-years away. Photograph by ...

NASA explains Pluto's newly discovered "blue sky" and whether or not potential astronauts could ever witness an Earth-like sunrise. The New Horizons space probe sent back its first color images of ...

Pluto reaches opposition at 3 A.M. EDT, presenting an optimal viewing opportunity due to its apparent brightness and the absence of moonlight. Visual observation requires a telescope with an aperture ...

Earth is, simply put, a ball of confusion these days for most of us—from its pandemics to its politics and everything in ...

The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's atmosphere, while at the same time giving methane and other organic ...

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere ...

Pluto reaches opposition at 3 A.M. EDT. Opposition is when objects typically appear at their best, and with no Moon in the sky, observers with large scopes and little light pollution may be able to ...