In space, rockets zoom around with no air to push against. What’s their secret? Turns out, the engines that power rockets are different than the kind of engines that power aircraft or other Earth-based equipment. Rocket engines carry everything they require into space, rather than relying on air. Like Earthly engines, rocket engines operate using … Read more
The seven wonders of the ancient world were a selection of exceptional pieces of architecture and art in the Middle East, North Africa and southern Europe. A number of ancient and medieval writers from Europe and Middle East debated and described what are today called the seven “wonders” of the world (not all writers used … Read more
The “secret code” the brain uses to create a key type of memory has finally been cracked. This type of memory, called working memory, is what allows people to temporarily hold on to and manipulate information for short periods of time. You use working memory, for example, when you look up a phone number and … Read more
Salt crystals from Central Australia hold ancient microorganisms that became trapped 830 million years ago, new research finds. And there’s a chance that some of the microorganisms might still be alive. The single-celled organisms are locked in tiny fluid pockets — smaller than the width of a human hair — in halite, or salt, from … Read more
Space is very, very cold. The baseline temperature of outer space is 2.7 kelvins — minus 454.81 degrees Fahrenheit, or minus 270.45 degrees Celsius — meaning it is barely above absolute zero, the point at which molecular motion stops. But this temperature is not constant throughout the solar system. So-called “empty” space — though it … Read more
One side of the moon is littered with far more craters than the other, and researchers finally know why: A massive asteroid that slammed into the moon around 4.3 billion years ago wreaked havoc in the moon’s mantle, according to a new study. More than 9,000 visible craters pockmark the moon, thanks to barrage of … Read more
The unicorn is one of the most famous mythical creatures, often depicted as a white horse with a spiraling horn erupting from its forehead. It’s not hard to imagine a horse with a horn, and for much of the mythical creature’s history, people thought it actually existed. But where did this myth come from? Unicorn-like … Read more
Scientists have crafted a new message for any intelligent extraterrestrials who might be out there. And they want feedback on whether they should send it. The technology needed to send the message is not yet ready. And if and when the note is transmitted, it would take thousands of years for it to reach its … Read more
The mysterious 6,500-year-old burial of a woman and several arrowheads in northern France may reveal details of how women were regarded in that society during the Neolithic period, or New Stone Age, a new study finds. The researchers investigated giant graves known as “long barrows” — large earthen mounds, often hundreds of feet long and … Read more
A long time ago, in a galaxy far, far away, technology was way cooler than it is in our reality: Commercial spaceships bending space-time to cross galaxies in seconds; autonomous androids capable of translating any language on the fly, or leaving a battlefield in ruin; deadly swords of plasma that fit comfortably under your bathrobe. … Read more
