Opposition is growing in Hawaii to the military's plan to add up to seven space surveillance telescopes atop Haleakalā ...

Six planets will shine together in the evening sky on Feb. 28. Here's how to get the best view before they disappear.

The upturned sickle-shape of the 18%-lit moon will appear 40 degrees above the horizon as the sun sets, with a string of bright "evening stars" representing Venus, Mercury and Saturn arrayed beneath, ...

Drawing together leading experts from across the field, an international collaboration of cosmologists has created a unified approach for measuring the value of the Hubble constant. Published in ...

James Webb changed astronomy from a million miles away - but in Chile’s Atacama Desert, the Giant Magellan Telescope is being ...

Six planets are above the horizon this weekend — but only two are obvious to the naked eye. Here’s what you’ll really see ...

From nocturnal wildlife safaris to stargazing train rides, this dark sky expert shares her top astrotourism experiences around the world.

Although there is no scientific connection between Ramadan and the planetary parade, it is definitely a lucky coincidence between two independent cycles ...

NASA's head of planetary defence has revealed what keeps her up at night - tens of thousands of 'city killer' asteroids that remain undetected.

Six Planet Parade: For those hoping for a dramatic celestial alignment, the six planet parade offers a subtle rather than ...

A total lunar eclipse will dazzle skies next month, marking what astronomers are calling one of the best astronomical events to see with the naked eye.