CRA PERSPECTIVE • SOLAR SYSTEM SCIENCE Travel Time Within Our Solar System How Long to Reach Each Planet From Earth? THE MOON • VENUS • MARS • JUPITER • SATURN • AND BEYOND An educational exploration of distances, speeds and travel times across our cosmic neighbourhood. Our Solar System — Closer Than the Stars, Farther Than You Think The nearest star system, Alpha Centauri, is 4.24 light-years away. But our own solar system is vastly closer — and yet still staggeringly large. The Moon is just 3 days away. Mars takes 7–9 months . Jupiter requires 2–3 years . And Neptune, the farthest planet, could take over a decade. This framework breaks down the journey to each major destination in our solar system — using current rocket technology. “The solar system is our backyard. But it is a very, very large backyard.” The Four Pillars of Solar System Travel 📏 DISTANCE From 384,400 km (Moon) to 4.5 billion km (Neptune). ...
Ancient Egypt continues to amaze the modern world with its incredible architectural and engineering feats. Among these wonders are the massive granite boxes found in pyramid complexes and the Serapeum of Saqqara. Weighing up to 100 tons, these precisely carved and polished boxes, often referred to as sarcophagi, have baffled historians and engineers alike. How did the ancient Egyptians achieve such remarkable feats of engineering with the tools and technology available over 4,000 years ago? The Granite Quarries of Aswan The granite used to create these colossal boxes was sourced from the quarries of Aswan, located over 800 kilometers (500 miles) from Giza. Aswan's granite is a particularly hard stone, which raises questions about how the Egyptians extracted, transported, and worked with this material. Evidence suggests they used simple yet effective tools such as copper chisels, dolerite hammers, and wooden wedges. Workers would carve grooves into the stone, insert wooden wedges so...