The Viking missions to Mars 50 years ago may have actually discovered life on the planet. 🔬 The key to solving this mystery is the discovery of perchlorate on the Martian surface, which was found in 2008. This chemical is significant because it can be linked to life. The discovery of perchlorate fills a gap in understanding the Viking missions' results and what they might have really found. What does this mean for our search for life beyond Earth? #space #mars #astrobiology #vikingmissions

The double pulsar discovery explained by Brian Cox