Tonight’s chart shows Polaris and the Big and Little Dippers for a September evening. You can use the Big Dipper to find Polaris, which is also known as the North Star. Notice that a line from the two outermost stars in the bowl of the Big Dipper points to Polaris. And notice that Polaris marks the tip of the handle of the Little Dipper. The northern sky is a large clock, with Polaris at its center. The Big and Little Dippers: All you need to know EarthSky astronomy kits are perfect for beginners. View larger. | Keith Breazeal’s photo of a meteor streaking past the Big Dipper during the 2015 Perseid meteor shower. The Big Dipper swings full circle – 360 degrees – around Polaris in about 23 hours and 56 minutes. If you’re in the northern U.S., Canada or at a similar latitude, the Big Dipper is circumpolar for you – always above the horizon. A month from now at mid-evening, the Big Dipper will be noticeably lower in the northwest.
All about Earth's Atmosphere | AstronotesWhere does space begin? Let’s look up into our planet’s atmosphere, that shell of nitrogen (about 78%), oxygen (about 20%), various other gases (2%) that makes life on Earth possible, to find out. The atmosphere gets thinner as you go further up, in fact 90% of the Earth’s atmosphere by weight is in the bottom 10 miles (16 km). A view of the crescent moon through the top of the Earth's atmosphere. The atmosphere is stratified, that is divided into layers based the bulk properties and behaviours of the air at that altitude. Just to put things into perspective, Mt. A diagram showing the layers of the Earth's atmosphere (Image credit: NASA) Rising through the tropopause we come to the second best –known layer of the atmosphere, the stratosphere. Ozone is a molecule made of three oxygen atoms (the oxygen molecules in stuff we breathe is made of two oxygen atoms; an extra atom makes a huge difference as ozone is horrendously toxic).
How to Make a Decision Using a Quantitative Scoring SystemEdit Article Edited by Rick Wiedeman, Ben Rubenstein, Krystle C., Jack Herrick and 21 others Life involves making a lot of decisions. In fact, one of the decisions you have to make right now is "Should I finish reading this white paper or shouldn't I?" So why not learn to make the best decision, or at least a good one every time? This method will help you quantify your values and make fast decisions between alternatives. Ad Steps 1Write three questions you’re trying to decide, e.g. 9Divide each option’s total score by your target score and multiply by 100 to get a total. Sample Calculation Here is a sample completed for selecting an ideal loan broker using the Quantitave Scoring System. Tips If you have more than six qualities, the value of the score can get diluted, so think hard about what really matters to you. Warnings
Stargazers Loungesleepyti.me bedtime calculatorEarth has more than one moon, astronomers confirm | The SideshowThere are at least two moons orbiting Earth at any given time Researchers at Cornell University say that what we know as the Moon is in fact not the only one orbiting our planet at any given time. Smaller objects regularly inhabit the Earth's orbit, usually leaving after a few months to continue on their celestial journeys. The discovery is considered a major breakthrough for space research because scientists had been working toward visiting asteroids outside of Earth's orbit for research. While these temporary moons are too small for a shuttle landing, they are prime for research from a relatively close distance. However, it's still to be determined whether the announcement will capture the public's attention like previously revealed New Moons. The new paper titled "The population of natural Earth satellites," from Cornell University's Mikael Granvik, Jeremie Vaubaillon and Robert Jedicke states that these "secret moons" enter and exit the Earth's orbit without notice.
Jon Anderson Fimo CreationsLIVE REAL TIME SATELLITE AND SPACE SHUTTLE TRACKINGnightNASA Telescope Confirms Alien Planet in Habitable ZoneThis story was updated at 12:15 p.m. ET. MOUNTAIN VIEW, Calif. — NASA's planet-hunting Kepler spacecraft has confirmed the discovery of its first alien world in its host star's habitable zone — that just-right range of distances that could allow liquid water to exist — and found more than 1,000 new explanet candidates, researchers announced today (Dec. 5). The new finds bring the Kepler space telescope's total haul to 2,326 potential planets in its first 16 months of operation.These discoveries, if confirmed, would quadruple the current tally of worlds known to exist beyond our solar system, which recently topped 700. The potentially habitable alien world, a first for Kepler, orbits a star very much like our own sun. "We're getting closer and closer to discovering the so-called 'Goldilocks planet,'" Pete Worden, director of NASA's Ames Research Center in Moffett Field, Calif., said during a press conference today. The newfound planet in the habitable zone is called Kepler-22b.