A celestial phenomenon is forming in the Northern Hemisphere on Friday, as seven planets are expected to appear lined up in the night sky. Most are expected to be visible to the naked eye ...

Social media users were perplexed by unusual sighting in the viral video, with one saying "genuinely what is this." ...

From Earth, if the orbits line up just right, we can see multiple planets in our night sky at the same time. In rare events, all the planets will line up such that they all appear in our night sky ...

and Neptune appearing in an arcing line from Earth's perspective. This occurs due to the planets' orbits bringing them into similar regions of the sky, creating an illusion of alignment when ...

By Katrina Miller Astute skywatchers may have already seen the striking line of planets across the night sky in January. This week Mercury joins the queue. Now every other world in our solar ...