Postcard sent from Sydney turns up in the UK - four decades later

Over 60 Unknown Moons Have Been Identified Orbiting Saturn

The James Webb Space Telescope Has Been Fully Assembled, And It Looks EpicSaturn's Strange Magnetic Field Could Make Its Insides Flow Like Honey

Astronomers Detect a Mammoth Planet With The Most Extreme Orbit We've Ever SeenSpaceX's Experimental Mars Rocket 'Starhopper' Just Passed Its Last TestThis Mindblowing Picture Shows a Galaxy, But Those Dots Aren't Glittering Stars

Mysterious Space Plane Has Now Been Orbiting Earth For 719 Days, And We Don't Know WhyThree Rocky Exoplanets Have Been Found Orbiting a Star Just 12 Light-Years Away

Physicists Outline an Ambitious Plan to Simulate Black Holes With Holograms

NASA Administrator Says Pluto Is Still a Planet, And Things Are Getting HeatedThere's a Strange Paradox in The Way We Want to Connect With Strangers

We Might Be Wrong About How Children Understand The Minds of Others at a Young AgeThis Simple Fix Can Reduce Everyone's Email Stress, According to a New Study

Magnetic Stimulation Can Help The Brain to Remember, New Evidence SuggestsAncient Cave Sealed For 40,000 Years May Have Been Hideout of The Last Neanderthals