How to build a Dyson Sphere – The most ambitious megastructure imaginable
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Even gathering all the energy resources of the Earth, we could not “migrate” to another planet. To take a large amount of mass (and people) from the Earth, it takes a huge amount of energy, and to get it we have a great resource not far from here: the Sun.
Nine rare species of animals that may soon be extinct In this reel, we meet some of the rarest critters on planet Earth, including the closest living relative to the giraffe, a lemur threatened by hunting and a tree kangaroo hanging on for survival due to habitat loss.
How to Land the Space Shuttle… from Space Presented on Halloween (October 31st) at Stack Overflow’s 2016 Remote Meetup in Philadelphia. This was one of nine "Tiny Talks" given over three days at the meetup. Every year, employees submit Tiny Talk ideas on a wide range of topics (some completely random and not company-related at all, like this one) and we vote on which ones we want to hear. So, thank you to my coworkers for voting me in. Original proposal description I submitted for this talk: Let's say you're traveling at about 17,500 miles per hour (28,000 km/h) in low earth orbit, your main engines are out of fuel, and it's your job to guide the spaceship through a fiery re-entry without burning up or skipping out of the atmosphere, navigate to your landing site, and arrive with just enough energy to make an unpowered landing on a runway which is halfway around the planet from where you started. And, of course, either you succeed on your first try, or everyone dies. So, no pressure…. In this talk, I'll show you how space shuttle designers, pilots, and autopilots managed to do just that.
Our Living Planet From Space Life. It's the one thing that, so far, makes Earth unique among the thousands of other planets we've discovered. Since the fall of 1997, NASA satellites have continuously and globally observed all plant life at the surface of the land and ocean.
The dog who loves to watch TV The Heidi getting ready to watch the documentary Planet Earth on TV. To comfortably watch the favorite program, running to bring the pad and places it in front of the TV.
Google Earth’s Incredible 3D Imagery, Explained Google Earth is the most photorealistic, digital version of our planet. But how?! Where do the images come from? How are they they put together? And how often are they updated? In this video, learn about the pixels, plans, and people that create Google Earth’s 3D imagery.
NASA & TRAPPIST-1: A Treasure Trove of Planets Found Seven Earth-sized planets have been observed by NASA's Spitzer Space Telescope around a tiny, nearby, ultra-cool dwarf star called TRAPPIST-1. Three of these planets are firmly in the habitable zone. Over 21 days, NASA's Spitzer Space Telescope measured the drop in light as each planet passed in front of the star. Spitzer was able to identify a total of seven rocky worlds, including three in the habitable zone, where liquid water might be found. The video features interviews with Sean Carey, manager of the Spitzer Science Center, Caltech/IPAC; Nikole Lewis, James Webb Space Telescope project scientist, Space Telescope Science Institute; and Michaël Gillon, principal investigator, TRAPPIST, University of Liege, Belgium. The system has been revealed through observations from NASA's Spitzer Space Telescope and the ground-based TRAPPIST (TRAnsiting Planets and PlanetesImals Small Telescope) telescope, as well as other ground-based observatories. The system was named for the TRAPPIST telescope.
Lioness trying to stop a giraffe The exciting moment when a lioness trying to stop a giraffe who runs saved in Namib desert, Southwest of Namibia. The lioness jumped on the giraffe, but it will fall to the ground and trampled by the towering animal that continues the path of unstoppable. An excerpt of the wildlife series "Planet Earth II" broadcast on BBC tv channel.
Newborn iguana against hungry snakes In June, the birth of small marine iguana is a real gift for snakes (pseudalsophis biserialis) on Fernandina island, an uninhabited island located in the Galapagos Archipelago. From their first steps, newborn iguanas need to avoid attacks by dozens of hungry snakes in a scary Chase. Some manage to find shelter in the rocks, but I wouldn't have all this opportunity. An impressive video of the documentary series "Planet Earth II" which aired on BBC's channel.
The wonderful trailer of the documentary Planet Earth II The "Planet Earth II" is the sequel to the highly successful series Planet Earth, which was broadcast for the first time in 2006 by the BBC. The British channel will continue with presenter David Attenborough, and recently released this impressive trailer.
Jupiter Impact March 17th 2016 the planet at about 3 o'clock. This video shows an apparent impact on Jupiter. If you look to the right side of the planet you will notice a brief bright flash. This is suspected to be a comet or asteroid measuring in the tens of meters across. Even such a small object causes a huge energy release when it impacts Jupiter's cloud tops, enough to be seen by amateur telescopes here on Earth.
The dancing mushrooms A nice video with footage from the series "Planet Earth" by BBC, showing the growth of several fungi in timelapse, and their life cycle as parasites on living organisms.
After A 9-Year Journey, This Spacecraft Will Finally Reach Pluto Imagine the stretch of outer space along the Milky Way like a 4.67 billion mile highway from planet Earth to Pluto, the former most-distant planet. Imagine NASA's New Horizons spacecraft, an interplanetary space probe, has been traveling along that highway for nine and a half years since its launch from Earth in January of 2006. This week, on July 14th, at approximately 7:50 a.m. Eastern Standard Time, New Horizons will fly past Pluto and its five moons. Realistically, it's the first time we'll ever see Pluto. We have zoomed in on images from the Hubble, but the resolution is highly pixelated and leaves a whole lot of mystery to this distant body. You can follow along on the flyby on NASA TV live broadcast program, which will be live streaming all active communications from the spacecraft.