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Astrophysics Astrophysics People have gazed at the stars, given them names, and observed their changes for thousands of years. NASA joined the ancient pursuit of knowledge of our universe comparatively recently. Goals The science goals of Astrophysics are breathtaking: we seek to understand the universe and our place in it. We are starting to investigate the very moment of creation of the universe and are close to learning the full history of stars and galaxies. SCIENCE FICTION TECHNOLOGY TERMS The following items are found in science fiction literature as technologies useful in authoring a plausible setting for a sci-fi story: PROPULSION: Faster Than Light Drive (FTL) is required for stories about star based exploits. Twentieth century rocketry is limited to activities in the Solar System. At present spacecraft velocities, the nearest star would require voyages of thousands of years. At the speed of light, the nearest stars could be reached in decades of time. Several types of FTL systems are found in sci-fi literature.

How 1-Year Space Mission Affected Astronaut Twin Scott Kelly: Early Results Spending a year in space affected former NASA astronaut Scott Kelly's body in subtle but potentially significant ways, new research suggests. Kelly and cosmonaut Mikhail Kornienko flew the first-ever yearlong mission aboard the International Space Station (ISS), wrapping up the flight with a touchdown on the steppes of Kazakhstan last March. The goal of the project — which is ongoing, in the data-analysis phase — is to gauge the physiological and psychological impacts of long-duration spaceflight, to help prepare for crewed missions to Mars and other distant destinations. Part of this work involves Scott Kelly's identical twin brother Mark — a former NASA astronaut who flew on four space shuttle missions.

Nature Blows My Mind! The Flamboyant Sea Slug nicoboxethai/CC BY 2.0 Nudibranch, or what we usually call sea slugs, blow my mind. Ever since spotting one for myself during a tide pool trip about a year ago, I've been fascinated with these creatures. I think of them as the drag queens of the sea: flashy stand-outs that are always dressed to the nines. The one I found is a Hermissenda crassicornis -- the flashy little thing pictured below with bright pinkish-orange cerata waving like a feather boa and neon blue outlines around its tentacles.

IRL's Seven Principles of Learning 1. Learning is fundamentally social. While… IRL's Seven Principles of Learning 1. Learning is fundamentally social. Pixnary - Visual Vocabulary for CAT "Coleridge was evidently one of those people who abase themselves excessively in the hope of never having to hear their faults expressed on the lips of others." "What would possess anyone to take such blessings and abase them with dollar signs?" "Where the people are Catholic and submissive to the law of God, as declared and applied by the vicar of Christ and supreme pastor of the church, democracy may be a good form of government; but combined with Protestantism or infidelity in the people, its inevitable tendency is to lower the standard of morality, to enfeeble intellect, to abase character, and to retard civilization, as even our short American experience amply proves." "The human spirit is fashioned in the likeness of the Creator: it is improper to abase that spirit to some other component of the Creation." - - Circuit Simulator This electronic circuit simulator is highly interactive giving the feeling of playing with real components. It's very helpful for experimentation and visualization. Best of all, thanks to the power of HTML5, no plug-ins are required! The original implementation, in Java, belongs to Paul Falstad who kindly gave his permission for me to build this port. Click here to open the simulator in a full window. How to use this Science Mission Directorate Solar System, Sky Watching, Meteor Showers Earth will pass through a stream of debris from comet 2003 EH1 on January 3, 2017, producing a shower of meteors known as the Quadrantids. A three-year NASA field expedition to examine Earth’s coral reefs is now underway, giving scientists the opportunity to study reefs ecology and condition.

Nudibranch looks like a bunny of the sea It’s round, and fluffy and has wiggly little ears! Sort of. These little sea creatures, affectionately dubbed “sea bunnies” have recently become social media celebrities.

This website is very simple and has many useful informations on it. Lot of infos on informatic stuff such as : programming, scripting, games etc.I really appreciate it, it helped me out for a bunch of stuff on internet and some problems i had with my computer. Thanks everybody from being on Reddit ! by zoombir Feb 7

we are learning more and more everyday how governments are corrupt thanks to recently leaked files by randyindiego Nov 21

obviously governments are nervous about the public reaction so are weary to release all of the truth they have hidden away by randyindiego Nov 21

i too use to scoff at the idea of aliens but once you honestly open your eyes and mind. a nasa scientist wrote a book claiming to have found life on mars and has pictures as well by randyindiego Nov 21

why are you so egotystical to believe we are the only life in this infinite universe? by randyindiego Nov 21

no there are countless testimonies, eye witness accounts, stonehenge, pyrimids, top military officails have confessed as well by randyindiego Nov 21

actually that says science rejects that the earth is hollow, so why would i believe it is, that like the cop out "faith"-the belief in something that is not there. by randyindiego Nov 21

All you have successfully proven is that you clearly have no understanding of how the scientific method or critical thinking works. Congratulations randy, you're as uninformed as the religious zealots. Since you'll believe anything, here is "proof" that the Earth is hollow: by jmile69 Nov 21

proof our monetary system is not run by our govt by a rivate corporation, the federal reserve: by randyindiego Nov 21

It wouldn't be the internet without argument. I'm loving pearltrees so far. Great way to keep my links sorted. by jmile69 Nov 21

He can't provide a logical argument for or against anything. You have to be capable of knowing what one is first. The burden of proof lies on the claiment randy. You want proof go read the 90% of the internet that isn't filled with crack pot nonsense and myth. by jmile69 Nov 21

can you please cite your resources that have discreddited these truths?i havnt assumed anything,your stance is im a crack pot conspiracist, my stance is we have proven these so called theories to be actual fact. It's 2010 science has come a long way since the 40's. folks who were sworn to secrecy are reaching their death beds and confessing these life long secrets...just dig a litle further before believeing what you are told to belive. Never Stop Learning and Growing as a society or we are bound for failure by randyindiego Nov 21

You are just full of contradiction. Your "conspiracy theoris" have been discredited countless times. I also find it funny that since I called you on your crap, you immediately begin to make assumptions about my beliefs, incorrect ones at that. Go back to your bong hippy boy. by jmile69 Nov 21

no...evidence equals facts. scientific testimonies equal facts. first hand eye witness accounts from multiple, reliable sources equals facts. all of which are present and accounted for.its not like im saying some being blinked once to create man and twice to create woman; now that is a conspiracy theory. do you believe in the tooth ferry and the easter bunny too? by randyindiego Nov 21

Guys, let's not have this argument. I think we can all agree that reddit has a demographic, every news website does, even if it's on accident. This, on the other hand, is a site for linking people interesting content, not for trying to bash one another, or their views. by thelivingded Nov 21

i understand things can seem unfair from one's perspective. it is what you make of it, clearly it is much more difficult to have things fair and balanced when there is so much deception and falsities that have been manufactured throughout the course of time for individual gain. the world we live in has been manufactured, it is all a mirage and a curtain and until you pull the blinders off and ask the tough questions you will forever be in the dark.yes there are aliens, yes jfk was a cover up, yes the monetary system is a scam, yes 9/11 was a false flag operation, yes cannabis has been put through a smear campaign and alcohol is a far more dangerous substance by randyindiego Nov 21

Just remember that the vast majority of them are highschool and college students, and therefore, driven by idealism. Idealism is nice, but the real world isn't fair, and until you've experienced that, well, I'll take their opinions with a grain of salt. by jmile69 Nov 20

id much rather listen to what intelligent people have to say; who understand the world is alot older than religious people believe. These are people who question and see beyond the mere surface by randyindiego Nov 20

Reddit rocks. It makes me laugh, makes me think, ,makes me angry, makes me involved. I love it! by peabody Nov 19

I used to Digg a lot too. The redesign really didn't work for me though. The reddit community seems to be a bit more welcoming, anyhow. by c0l0rs Nov 19