Space

I should probably start with a confession for someone who writes about the night sky almost every day: until recently, I had never actually seen the Milky Way properly. Not as a bright, structured band stretching across the sky. Not in a way that made me stop and stare. I knew my home skies in central England were light-polluted. I also thought I had experienced reasonably dark skies before…

From orbit, Earth often looks more like art than geography. Satellites such as the European Union’s Copernicus Sentinel missions are designed to turn that beauty into information. Rather than taking only “normal” photographs, the Sentinel-2 satellites record Earth in multiple wavelengths of light, including bands beyond human vision. Scientists then combine those wavelengths into…

RNA, which is one of life’s most crucial molecules dealing with the synthesis of proteins, could be common in the universe, according to a new experiment that shows how RNA could easily have formed on Earth 4.3 billion years ago. RNA (short for ribonucleic acid) is a simpler cousin of DNA, which is the molecule that contains the genetic information for our cellular biology. RNA comes in a…

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, astronomers have for the first time confirmed the existence of one of these starless worlds by pinpointing its distance and mass — a rogue planet roughly the size of Saturn nearly 10,000 light-years from Earth. Planets are typically found bound to one or more stars. However, in…