Deep Science | Documentary Tapes

 A Lost Habitable World. Mysteries of Venus explored Ten Mysteries of Venus The surface of Venus is completely inhospitable for life: barren, dry, crushed under an atmosphere about 90 times the pressure of Earth’s and roasted by temperatures two times hotter than an oven. But was it always that way? Could Venus once have been a twin of Earth - a habitable world with liquid water oceans? This is one of the many mysteries associated with our shrouded sister world. 27 years have passed since NASA’s Magellan mission last orbited Venus. That was NASA’s most recent mission to Earth’s sister planet, and while we have gained significant knowledge of Venus since then, there are still numerous mysteries about the planet that remain unsolved. NASA’s  DAVINCI  (Deep Atmosphere Venus Investigation of Noble gases, Chemistry, and Imaging) mission hopes to change that. Here are ten mysteries of Venus that NASA scientists are still grappling with:                     A Lost Habitable World. Mysteries o

  The Impact That Wiped Out the Dinosaurs                                                   The Asteroid that hit the Earth 66 million years ago What Happened in Brief According to abundant geological evidence, an asteroid roughly 10 km (6 miles) across hit Earth about 65 million years ago. This impact made a huge explosion and a crater about 180 km (roughly 110 miles) across. Debris from the explosion was thrown into the atmosphere, severely altering the climate, and leading to the extinction of roughly 3/4 of species that existed at that time, including the dinosaurs. Many asteroids of this type are now known; their orbits pass through the inner solar system and cross Earth's orbit. Some of these could potentially hit Earth in the future. Most, but not all are smaller than the one that hit us 65 million years ago. Gaps in the Fossil Record Fossils found in soil layers of different ages show a record of slow, gradual changes in species, with simple organisms gradually being replac

Life On Saturn’s moon Enceladus  Life On Saturn’s moon Enceladus. Cassini Spacecraft found oceans to similar on Earth, where life might have begun. Deep Science Documentary Tapes Aliens?! Enchiladas?! What is this world coming to? Or should I say, what is coming to this world? First of all, yes, it’s pronounced Enceladus (EN-CELL-A-DUSS), not enchiladas. Enceladus is Saturn’s sixth largest moon, but it would be better described as a winter wonderland. Winter, because it’s covered in ice and has an average surface temperature of -200º C (-330º F). Wonder, because just 40 km (25 miles) below its surface, are the ingredients for life. Are there aliens out there? How long until we know for sure? This is the Waimangu (Why-mang-goo) Geyser. It doesn’t exist anymore, but when it did, it could shoot water 460 meters (1,509 ft) high, making it the largest geyser ever known …on Earth. But beyond our atmosphere, Waimangu is a drop in the bucket. If you want to see a real geyser, you should book a