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Astronomy Picture of the Day Archive

http://apod.nasa.gov/apod/archivepix.html

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When Light Just Isn’t Fast Enough Take a speed of light trip across the solar system starting at the Sun We’ve heard it over and over. There’s nothing faster than the speed of light. Einstein set the speed limit at 186,000 miles per second (299,792 km/sec). No material object can theoretically travel faster. For all practical purposes, only light is lithe enough to travel at the speed of light. Infographic: United States of the Environment In the spirit of two popular infographics that map out the best and worst of all 50 U.S. states — the United States of Awesome and the United States of Shame — MNN decided to see how each state shines or suffers in regard to environmental and public health. Our "United States of the Environment" maps depict each state's No. 1 and No. 50 ranking for issues such as conservation, agriculture, energy efficiency, disease prevalence, pollution, natural resource availability and education, among others. Check out the two maps below, and see our list of states, stats and sources for more information.

Get a filter and look up: That dot is Venus View full sizeThe Associated PressThis map provided by NASA shows the visibility for the transit of Venus passes in front of sun. Venus crosses the sun on Tuesday, June 5, 2012, from the Western Hemisphere (Wednesday, June 6 from the Eastern Hemisphere). Known as a transit of Venus, this won't happen again until 2117. The transit is happening during a 6-hour, 40-minute span starting after 6 p.m. EDT in the United States. (AP Photo/NASA) The Elegant Universe: Pt 1 The Elegant Universe: Part 3 PBS Airdate: November 4, 2003 NARRATOR: Now, on NOVA, take a thrill ride into a world stranger than science fiction, where you play the game by breaking some rules, where a new view of the universe pushes you beyond the limits of your wildest imagination. This is the world of "string theory," a way of describing every force and all matter from an atom to earth, to the end of the galaxies—from the birth of time to its final tick, in a single theory, a "Theory of Everything." Our guide to this brave new world is Brian Greene, the bestselling author and physicist. BRIAN GREENE (Columbia University): And no matter how many times I come here, I never seem to get used to it.

2012 March 12 - The Scale of the Universe Interactive Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2012 March 12 The Scale of the Universe - Interactive Flash Animation Credit & Copyright: Cary & Michael Huang

Top 10 Modern Space Videos Top 10 Modern Space Videos Share on Facebook0 inShare0 Weightlessness, dark matter, and mind-blowing telescope images are great reasons to be excited about space exploration. Here are some of the best videos from our most recent decade of space travel. SLCC - Learning Handouts Skip navigation links ugs : life and learning in sync Sanger Learning Center is UT Austin’s main resource for academic support. Each year, we help more than 20,000 students achieve their academic potential. We are open Monday through Friday, 8 a.m.-5 p.m. Come in for one-on-one or drop-in tutoringImprove your study skills with a learning specialistMeet weekly with a peer academic coachAttend free classes and workshops

Transit of Venus 2012: Spectacular show seen for the last time until 2117 By Eddie Wrenn Published: 00:23 GMT, 6 June 2012 | Updated: 08:09 GMT, 7 June 2012 Stargazers from across the globe gathered together to watch one of the rarest astronomical spectacles today. Your Sky by John Walker Welcome to Your Sky, the interactive planetarium of the Web. You can produce maps in the forms described below for any time and date, viewpoint, and observing location. If you enter the orbital elements of an asteroid or comet, Your Sky will compute its current position and plot it on the map. Each map is accompanied by an ephemeris for the Sun, Moon, planets, and any tracked asteroid or comet. A control panel permits customisation of which objects are plotted, limiting magnitudes, colour scheme, image size, and other parameters; each control is linked to its description in the help file.

Animal Sleep - StumbleUpon Most animals have a daily pattern of rest and activity. Some animals are more active during the day (diurnal) and some are more active during the night (nocturnal). How much time do animals spend sleeping? Well, it depends on the animal: Hubble just discovered a moon hiding at the back of our Solar System A few weeks ago, a huge galaxy orbiting our own appeared seemingly out of nowhere. And now, astronomers have discovered a brand new moon hiding in plain sight at the outskirts of our very own Solar System. The moon has been spotted orbiting the second brightest icy dwarf planet, Makemake, way out past Pluto in the Kuiper belt, and it's around 161 km (100 miles) in diameter.

What does 0^0 (zero raised to the zeroth power) equal? Why do mathematicians and high school teachers disagree Clever student: I know! Now we just plug in x=0, and we see that zero to the zero is one! Real Science Online We want you to know we use cookies to support features like login; without them, you're unlikely to be able to use our sites. By browsing our site with cookies enabled, you are agreeing to their use; read our newly updated privacy policy here to find out more. Sort by All Space Climate Humanities Nature Biology How do galaxies form?

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