Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that ...

Plus: Saturn’s moon Iapetus is visible, our Moon passes the bright star Spica, and Mars skims south of Pollux in Gemini in ...

A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

Venus, Saturn, Jupiter and Mars are all visible after sunset, but social media claims about it being a rare "planetary ...

Venus and Saturn will be in conjunction this weekend, appearing side by side in the night sky during January's post-sunset ...

The competition is organized by the Royal Observatory Greenwich in London, England, in association with BBC Sky at Night ...

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

You’ll be able to view a rare alignment of planets this month and into February. Our astrotourism expert reveals the best ...

Experts with Sky & Telescope magazine say using binoculars or a telescope at mid-northern latitudes might be your best chance to see Comet ATLAS, but you need an unobstructed view of the southwestern ...

ESO estimates the complex will leak as much light pollution as a city with a population of about 20,000. Parts of the ...

From magnification to light-gathering, here’s how to make the decision between buying a telescope or a monocular for ...