- Right now, rockets get dumped into the ocean or otherwise discarded after use, which is a big part of why flying to space is so expensive. It's like building a 747 and using it once.
- While people have flown to orbit and landed again (in the Space Shuttle), that required the use of a winged lifting body, which is enormously more complicated and expensive than a simple rocket. Also, the Shuttle required a big external tank and two booster rockets – which got jettisoned.
- While people have launched rockets and landed them vertically before (Blue Origin, just a few months ago), those rockets weren't capable of going into orbit. And going to orbit is a big difference from going into space: space isn't very far away at all, you just need to go about 60 miles straight up. Orbit isn't high, it's fast: orbit basically means that you're going fast enough that you keep falling towards the Earth and missing. Getting to that speed is a lot harder than just going up and falling down again.
- While people have tried to launch non-winged rockets into orbit and land them again (SpaceX, twice in the past year or so), it hasn't worked, because you're basically trying to land a pencil on its tip as it descends at a speed of a few thousand miles per hour. Previous attempts tried to land on boats (a pair of robot-controlled "autonomous spaceport drone ships" named the Just Read the Instructions and the Of Course I Still Love You), and the reason for the failures can be summarized as "now try to do that in high seas." This time, they landed on solid ground, which isn't as good from an orbital trajectories perspective, but which has the advantage of not moving about underneath you. (Usually)
This was a full-scale mission: a Falcon 9 took off from Cape Canaveral carrying eleven communications satellites. The first stage separated from the upper part of the rocket and landed safely, while the upper stages deployed the satellites into orbit.
So that's a major success for one of the most exciting companies in space travel today, and something that's likely to seriously cut the price of space travel over the next few years.
Those are some great websites just for you !
● khanacademy.org - Watch thousands of micro-lectures on topics ranging from history and medicine to chemistry and computer science!
● freerice.com - Help end world hunger by correctly answering multiple-choice quizzes on a wide variety of subjects!
● fuckinghomepage.com - LINKS TO FUCKING AWESOME SHIT THAT CHANGE EVERY MOTHERFUCKING DAY.
● artofmanliness.com - Blog/site dedicated to all things manly, great for learning life skills and good insights.
● unplugthetv.com - Randomly selects an educational video to watch instead of useless drivel.
● coursera.org - Educational site that works with universities to get their courses on the internet, free for you to use!
● lizardpoint.com - A collection of browser-based games and the like to improve knowledge of geography, math, and such.
● ted.com - Collection of TED (Technology, Entertainment and Design) talks in which knowledgable speakers address a variety of topics in short videos (< 18 minutes)
● lifehacker.com - Learn to hack life! Tips and tricks for improving all areas of your life.
● lifehackninja.com - Recently started life hack site that offers lists of useful knowledge.
● good.is/infographics - (Note: /u/gerbalgerbal typo'd to /inforgraphics, which does exist but isn't much of anything) Collection of infographics to get some good information in an easy to digest visual format.
● mathrun.net - Practice your basic math skills with a simple game
● justinguitar.com - Hundreds of free guitar lessons as well as some basic music theory.
● duolingo.com - Learn a new language for free while helping to translate the web!
● memrise.com - Learn things quickly and efficiently with flashcards that are spaced based on the spacing effect
● cookingforengineers.com - A site containing one man's explorations in food, with step by step instructions for making a wide variety of dishes.
● thedatingspecialist.com - A weekly blog run by a professional dating coach, offers advice on a wide variety of relationship topics.
● zenhabits.net - Blog about improving your life by making it simpler.
● nerdfitness.com - Fitness resource for the average person.
● mentalfloss.com - Articles meant to expose you to interesting info, whether to "make you smile" or to really get you thinking.
● openculture.com - Compendium of free learning resources, including courses, textbooks, and videos/films.
● charitynavigator.org - Site dedicated to reviewing charities so you can easily research any you might be interested in and see how they hold up.
● lettersofnote.com - Their tagline does better than I can: "Correspondence deserving of a wider audience"
● thedailymiscellany.com - On the opposite end of the vulgarity spectrum from fuckinghomepage.com, a daily dose of useful knowledge, quotes, and other random things.
Deep in the Adriatic sea there is a peaceful island, beautiful just like any other: infinitely translucent sea, sailboats everywhere, tourists getting sunburnt, cicadas droning their song all day long. Nothing appears to be out of order – it is a vacationer’s paradise.
However, beneath this idyllic image lies hidden a sinister business of illegal seashell trade, surprisingly run entirely by children...
AMERIČKI ADMIRAL OBJASNIO "Evo zašto treba da namestite krevet svakog ju...
Ima jutara kada je prosto teško ustati iz kreveta. Mnogi ni ne pomišljaju da ga nameste, što je zapravo jako važno. Inspirativni govor admir
I TO JE MOGUĆE Ovaj grad imaće FONTANU iz koje će moći da se toči PIVO
Slovenački gradić Žalec, smeštenom u dolini poznatoj po proizvodnji hmelja, ipak, će dobiti fontanu iz koje će moći da se toči pivo, odlučil
Nastavimo li zatvarati oči pred barbarstvom, mrak će pasti na cijelu Europu
TEŠKO da postoji strašniji slučaj kapitulacije države od onog u engleskom gradiću Rotherhamu. Tamo su bande pakistanskih imigranata godinama
OSUĐEN ZA FALSIFIKAT Diplomirao na „SRUKOVNOJ“ školi
Petar Disić, zamenik direktora smederevske „Čistoće“ i šef odborničke grupe Srpske napredne stranke u Skupštini, pred Osnovnim sudom u Smede
Trideset igračaka koje će prepoznati svaki klinac 80-ih (ali i oni malo ...
KOLIKO ste od ovih imali?
"Doneta naredba o istrazi Arkanovih Tigrova" - B92.net
Dosadašnji tužilac za ratne zločine Vladimir Vukčević izjavio je da je doneta naredba o istrazi Dobrovoljačke garde, te da je on dotakao i t
Šibenik: velika oseka olakšala ribolovcima vađenje školjaka za ješku >...
Najveća dnevna novina u Dalmaciji
IZBEGNUTA TRAGEDIJA NA MOSTU Vozač GSP sprečio mladića da skoči s Pančevca
IZBEGNUTA TRAGEDIJA NA MOSTU Vozač GSP sprečio mladića da skoči s Pančevca Putnici su mi vikali bravo majstore a ja nisam bio svestan šta se
Stari Dalmatinci ljubovali su u bunjama > Slobodna Dalmacija > Sib...
Najveća dnevna novina u Dalmaciji
Irci najavili dekriminalizaciju heroina, kokaina i kanabisa
MINISTAR Aodhán Ó Ríordáin je potvrdio i da će gradovi od iduće godine otvoriti posebne sobe za injekcije u kojima će korisnici drogu uživat
Ante Tomić: Sjećate li se zbog kakve je smijurije Glavaš uopće izašao iz...
Najveća dnevna novina u Dalmaciji
OD SIRIJE, PREKO SRBIJE, DO NEMAČKE Svaki delić njegovog putovanja je za...
OD SIRIJE PREKO SRBIJE DO NEMAČKE Svaki delić njegovog putovanja je zauvek sačuvan Mladom Sirijcu je bilo najvažnije da povrati dostojanstvo
Richard Branson objavio izvještaj: UN će pozvati vlade cijelog svijeta d...
BRITANSKI poduzetnik i vlasnik tvrtke Virgin Richard Branson na stranici svoje tvrtke objavio je da mu je predočen izvještaj UN-ovog ureda z