Over the weekend, two separate pieces of hardware left Earth for other worlds. India, China send probes out of this world
Un article de Wikipédia, l'encyclopédie libre. Une sphère de Dyson est une mégastructure hypothétique décrite en 1960 par le physicien et mathématicien américain Freeman Dyson , dans un court article publié dans la revue Science et intitulé Search for Artificial Stellar Sources of Infrared Radiation (« Recherche sur les sources stellaires artificielles de rayonnements infrarouges »). Cette structure d'astro-ingénierie consiste en une sphère de matière, artificielle et creuse, située autour d’une étoile et conçue pour en capturer presque toute l’énergie émise, pour une utilisation industrielle. Sphère de Dyson
Future Spacecraft Will Be 3-D Printed--In Space, By Robots | Co.Design | business + design Space exploration has always been restricted by the fact that all technology is to-go. Everything we put into the great beyond must first be fabricated on Earth and then packed into a rocket shroud and delivered--at great expense. The heavier the cargo, the larger and more costly the rocket, and thus, the launch. But what if we could shift production off terra nostra and actually do the building on site, aka in space? SpiderFab, a new system, says we can. The suite of technologies, equipped with 3-D printing and robotic assembly, has the capability of fabricating “on-orbit” structures that are 10 times the size of current spaceship components (such as apertures, solar arrays, and shrouds).
Keith Koehler is a busy man. Koehler is the PR director for NASA’s Wallops Island flight facility. Nestled in the flatlands of the Eastern Shore of Virginia, Wallops is home to several launchpads, three active runways, and a multitude of R&D buildings. A first-hand account of the launch of NASA’s LADEE lunar probe
Public maps out an A to Z of galaxies Volunteers participating in the Galaxy Zoo project have been helping scientists gain new insights by classifying galaxies seen in hundreds of thousands of telescope images as spiral or elliptical. Along the way they've also stumbled across odd-looking galaxies which resemble each letter of the alphabet. The international team behind Galaxy Zoo, including astronomers from Oxford University, are inviting people to be involved in more discoveries as they launch a new incarnation of the site at www.galaxyzoo.org. From today, the site includes more than 250,000 new images of galaxies, most of which have never been seen by humans. By classifying them, volunteers will add to our understanding of the processes which shaped our universe. 'We'd like to thank all those that have taken part in Galaxy Zoo in the past five years.
Fireball from Outer Space
Print This Article Blue Light Observations Indicate Water-Rich Atmosphere of a Super-Earth September 3, 2013 A Japanese research team of astronomers and planetary scientists has used Subaru Telescope's two optical cameras, Suprime-Cam and the Faint Object Camera and Spectrograph (FOCAS), with a blue transmission filter to observe planetary transits of super-Earth GJ 1214 b (Gilese 1214 b) (Figure 1). The team investigated whether this planet has an atmosphere rich in water or hydrogen. The Subaru observations show that the sky of this planet does not show a strong Rayleigh scattering feature, which a cloudless hydrogen-dominated atmosphere would predict. Press Release - Blue Light Observations Indicate Water-Rich Atmosphere of a Super-Earth - Subaru Telescope
In most fields of science hobbyists dominated the scene until the 19th century, with scientific papers largely coming from country gentlemen's houses, not university labs. Those days are long gone in most disciplines, but in astronomy there has always been a place for amateurs. While consumer-grade telescopes are obviously no match for the likes of the Hubble Space Telescope, amateur astronomers have made real contributions to modern science, through, for example, carrying out long-term monitoring of the planets in our Solar System. The Moon in 1910
British university posts exclusive photo scans of space exploration artifacts University College London (UCL) has released a set of photos collected from periods throughout the history of space exploration, from the first map of the Moon's surface to the Soviet Union's missions to Venus. UCL says that these images have never been published online in high resolution before; for some of them, it's their first time on the Internet at all. These images were collected and published as part of the Festival of the Planets and the European Planetary Science Congress 2013. They will be in a public exhibition at the congress on September 10 and 12. Very high-quality scans are available at UCL's website for the Faculty of Mathematical and Physical Sciences.
▶ The 2 Secrets to Sending People to Mars
1 What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of. Atoms, which form everything we see around us, only account for a measly 5%. The 20 big questions in science | Science | The Observer
Sun Primer: Why NASA Scientists Observe the Sun in Different Wavelengths Sun Primer: Why NASA Scientists Observe the Sun in Different Wavelengths › View larger This collage of solar images from NASA's Solar Dynamics Observatory (SDO) shows how observations of the sun in different wavelengths helps highlight different aspects of the sun's surface and atmosphere. (The collage also includes images from other SDO instruments that display magnetic and Doppler information.) Credit: NASA/SDO/Goddard Space Flight Center Taking a photo of the sun with a standard camera will provide a familiar image: a yellowish, featureless disk, perhaps colored a bit more red when near the horizon since the light must travel through more of Earth's atmosphere and consequently loses blue wavelengths before getting to the camera's lens. The sun, in fact, emits light in all colors, but since yellow is the brightest wavelength from the sun, that is the color we see with our naked eye -- which the camera represents, since one should never look directly at the sun.
Solar Palette If you look at the Sun (which you
Engineers Identify 12 Asteroids We Could Capture With Existing Rocket Technology - Wired Science <img class="alignnone size-full wp-image-204221" title="lupanyovorbits" src="http://www.wired.com/images_blogs/wiredscience/2013/08/lupanyovorbits.jpg" alt="" width="660" height="439" /> By looking through the catalog of known asteroids, aerospace engineers have identified 12 candidates that we could reach out and capture using existing rocket technology. Long overlooked as mere rocky chunks leftover from the formation of the solar system, asteroids have recently gotten a lot more scrutiny. A couple years ago, researchers outlined a seemingly daring plan to lasso and bring an asteroid back to Earth .
Keeping a Record of Our Burning Planet Some men just want to watch the world burn . But sometimes it’s for a good reason: to keep a record of global wildfire patterns and occurrences so scientists can understand and learn to manage them better. “We indeed have been observing an upward trend of fire activity in many areas of the globe,” says Ivan Csiszar , a satellite-based fire-detection and -monitoring researcher with the National Oceanic and Atmospheric Administration (NOAA) . In the United States, for example, the increase has been particularly pronounced.
Star Trails: Incredible Long Exposure Photographs Shot from Space Over the past two months NASA has been releasing a number of wonderful long exposure photographs taken by astronaut Don Pettit aboard the International Space Station. While there are many photos like these taken from the perspective of the Earth’s surface, Pettit’s images are unique in that they incorporate the passing blur of entire illuminated cities, aurora, and the sporadic flashes of lightening from thunderstorms. Check out many more photos from the series here . (via petapixel )
Scientists are arguing about whether Voyager has left the Solar System Has Voyager 1 reached interstellar space or not? That question was first asked about a year ago, when the probe first started seeing a drop-off in the levels of energetic particles emitted by the Sun, accompanied by a rise in cosmic rays from interstellar space. But the models of the Solar System's edge had suggested that there should be a corresponding change in the magnetic field's orientation as the Sun's field is overwhelmed by that of the galaxy as a whole. And Voyager 1 is seeing nothing of the sort; even as particle levels flip-flopped several times, the magnetic field remained largely stable. There have been a couple interpretations of this. The scientists who first announced the results argued that the data showed evidence that a new, previously unpredicted region exists at the edge of the Solar System and that we would have to wait before we would be able to sample the interstellar magnetic field.
WASHINGTON—At the AUVSI Unmanned Systems conference, New Mexico-based startup Titan Aerospace unveiled the company's prototypes for "atmospheric satellites"—autonomous unmanned aircraft powered purely by solar energy and capable of staying aloft at high altitude for up to five years. The first commercially manufactured long-endurance solar drone, the Solara 50 , is under construction now and is expected to fly next year. A bigger drone, the Solara 60, will soon follow. While solar-powered flight has been a reality since the early 1980s, Titan is the first company to work on commercially manufacturing solar-powered drones. And unlike some of the prototypes that have been flown by the established players in the aerospace and unmanned systems field, the Solara drones are based on well-worn technologies and simplicity in design. Almost orbital, solar-powered drone offered as “atmospheric satellite”
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