Imagine standing on a distant world and looking up at a green sun. Not a special effect. Not science fiction. A real star. For most of human history, the colours of stars seemed predictable. Cooler stars appear orange or red.…
Imagine looking into space and discovering a star that appears salmon pink. It sounds like science fiction. But new research from astronomers at the University of Warwick suggests that some of the Universe’s strangest stellar remnants could display colours far…
You are standing inside a galaxy that should not be able to hold itself together. Every star orbiting its center is moving fast enough that it ought to fly off into the dark, the way a stone flies off a…
Parallel universes vs multiverse: most people use the two terms as if they mean the same thing, and physicists say they do not. One imagines other universes far beyond our own. The other splits reality into branches right here. And…
Look up at Jupiter through even a modest telescope and the first thing you would notice is that it does not look like a planet the way Earth does. There is no coastline, no continent, nothing solid for your eye…
How long could humans survive without the Sun? Most people on the surface would likely last weeks to months, as temperatures fall below freezing within a week and crops stop growing. Underground groups might last longer, but it is untested.…
Mars in the Beehive Cluster is one of the most interesting morning sky sights of October 2026. Mars passes across the cluster from 10 to 12 October, coming closest on 11 October. Look after midnight with binoculars, and you will…
Picture standing on a world the size of Saturn, where the air outside would feel roughly like the inside of a car left in the sun on a hot afternoon. Not comfortable, but not alien either. Warm, familiar, almost forgiving,…
Saturn has spent more than forty years being known for one specific oddity. A six sided storm, wrapped tightly around its north pole, so geometrically clean that when Voyager first photographed it in 1980, scientists assumed something was wrong with…
Stand on the plains of Gale Crater and the first thing that would strike you is the silence. No wind sound carries the way it does on Earth, because the air here is too thin to carry much of anything.…