My Solar System - Motion, Acceleration, Velocity Topics Motion Acceleration Velocity Position Gravity Description Build your own system of heavenly bodies and watch the gravitational ballet. With this orbit simulator, you can set initial positions, velocities, and masses of 2, 3, or 4 bodies, and then see them orbit each other. Sample Learning Goals Predict the necessary mass, velocity, and distance from the sun of a planet in order for this planet to make a circular orbit around a sun.What happens when you increase or decrease the mass of the planet, but keep everything else constant? Version 2.04
Hubble's Hidden Treasures 2012 Since 1990, Hubble has made more than a million observations. We feature many of these on spacetelescope.org, and the most stunning are in our Top 100 gallery and iPad app. But there are thousands of pictures in Hubble’s science archive that have only been seen by a few scientists. We call these images Hubble’s hidden treasures — stunning images of astronomical phenomena that have never been seen and enjoyed by the public. Every week, we search the archive for hidden treasures, process the scientific data into attractive images and publish them as the Hubble Picture of the Week. But the archive is so vast that nobody really knows the full extent of what Hubble has observed. This is where you come in. Searching Hubble’s archive for hidden treasures is a lot of fun, and it’s pretty straightforward, even if you don’t have advanced knowledge. Hubble’s Hidden Treasures 2012: Find and tweak Hubble observations using a set of simple online tools. Read more:
Historiallinen käänne – Kiina nousi USA:n ohi maailman kauppamahdiksi Kiina ohitti Yhdysvallat viime vuonna maailmankaupan ykkösmaana. Kiinan vienti ja tuonti olivat viime vuonna yhteenlaskettuna 3 870 miljardia dollaria, kun Yhdysvaltojen tuonti ja vienti ylsivät yhteenlaskettuna 3 820 miljardiin dollariin. Yhdysvallat on pitänyt maailman kauppamahdin valtikkaa itsellään aina toisen maailmansodan päättymisestä lähtien 1940-luvun puolivälistä. Nyt kauppavalta siirtyi kuitenkin Kiinalle lähes 70 vuoden amerikkalaisen aikakauden päätyttyä. Lisäksi Kiinan kauppatase on 231 miljardia dollaria ylijäämäinen, kun Yhdysvaltojen kauppataseessa on yli 700 miljardin dollarin alijäämä. Kauppataseen ylijäämäisyys tarkoittaa sitä, että Kiina vie ulkomaille enemmän kuin maahan tuodaan. Kiinan kaupankäynnin voimaa kuvastaa hyvin muun muassa se, että investointipankki Goldman Sachsin arvion mukaan Euroopan suurin talous Saksa tulee viemään kuluvan vuosikymmenen loppuun mennessä Kiinaan yli kaksi kertaa enemmän kuin mitä se vie naapurimaahansa Ranskaan.
Boletim em Órbita nº 91 (Edição Especial) A conquista da Lua foi uma das maiores aventuras da Humanidade que continua a marcar gerações. A aventura dos doze astronautas que pisaram o solo lunar marcou o culminar de um esforço e de uma corrida entre duas super-potências que ‘lutavam’ no espaço pela hegemonia numa guerra que se dizia fria. Porém, mesmo 40 anos após as primeiras explorações lunares, ainda existem pessoas que duvidam de que alguma vez o Homem tenha caminhado sobre o nosso satélite natural. Movidos por motivos económicos, um punhado de autores tenta mostrar através de falsos argumentos, contra-argumentações ignóbeis e teorias idiotas, que uma das maiores aventuras da Humanidade não passou de uma conspiração bem elaborada. Entrem no site do Boletim Em Órbita, clicando aqui.
Voyager 1 Detects Weirdness at Solar System Edge Voyager 1 is the most distant man-made object and is thought to have recently escaped the sun’s sphere of influence. The probe, launched 35 years ago, is therefore mankind’s first interstellar vehicle careening into the vast expanse of space between the stars. Needless to say, as one of two deep space probes launched in 1977, Voyager 1 has explored previously unknown regions of the solar system, making groundbreaking discoveries as it went. Now, in a new paper published in the Journal of Geophysical Research, scientists analyzing data streaming from the spacecraft have uncovered a small mystery right at the solar system’s magnetic boundary with the interstellar medium. ANALYSIS: Voyager 1 About to Become Interstellar Emissary? As the sun travels through the galaxy, it carries its magnetic field with it, creating a magnetic “bubble” — the heliosphere — that all planets, spacecraft and people live inside. ANALYSIS: Voyager 1: The Little Spacecraft That Could Image credit: NASA
PauhaGma : Vaalikaamme tätä... O universo num infográfico em Flash – Newsgames Mesmo que os filósofos do apocalipse prevejam uma morte rápida para o software Flash e a vitória suprema do HTML5, tem bastante gente fazendo coisas inteligentes com o programa. The Scale of the Universe 2 é um infográfico interativo em que você pode comparar os tamanhos de vários elementos conhecidos do UNIVERSO! A vida, o universo e tudo mais Sim, caro leitor, das menores partículas que compõe o universo até as galáxias mais distantes, esse multimídia interativo te permite comparar o conhecemos neste mundão de meu Deus do infinitamente grande ao minúsculo – incluindo na conta nós, o ser humano. Uma vantagem em relação ao infográfico original são as caixas de informação que aparecem em cada elemento, quando você clica no próprio. "Somos um grão de areia no universo?" Se empolgou?
Nasa's Dawn moves on from Vesta to study Ceres The voyage will take nearly three years Firing its ion propulsion thrusters, Dawn had been slowly spiraling away from Vesta for more than a month until it was to pop free from its gravitational grip. Since its antenna was pointed away from Earth during this last maneuver, engineers would not know until Wednesday how it went. The departure was considered ho-hum compared with other recent missions - think Curiosity's white-knuckle "seven minutes of terror" dive into Mars' atmosphere. "It's not a sudden event. There's no whiplash-inducing maneuver. Launched in 2007, Dawn is on track to become the first spacecraft to rendezvous with two celestial bodies in a bid to learn about the solar system's evolution. Dawn slipped into orbit last year around Vesta - about the size of the U.S. state of Arizona - and beamed back stunning close-ups of the lumpy surface. Dawn uncovered a few surprises. The collisions spewed chunks of debris into space; some fell to Earth as meteorites.
Fast Company: Rovio on maailman innovatiivisin Oma Yritys Suomalainen Rovio on maailman innovatiivisin yritys, väittää arvostettu amerikkalainen listaaja. Kari Hänninenkari.hanninen@kauppalehti.fi+358-10-665 101 Tiedätkö asiasta enemmän? Lukeaksesi koko uutisen on selainohjelmassasi (Internet Explorer, Firefox, Chrome, Opera tms.) oltava käytössä ns. evästeet (cookiet). Aiheeseen liittyviä uutisia Kommentit Yhteensä 1 kommenttia Kirjoita kommentti Voidaksesi kirjoittaa kommentteja tarvitset nimimerkin keskustelupalstallemme ja sinun tulee olla sisäänkirjautuneena sivustollemme: Kirjaudu sisään | Luo keskustelunimimerkki Lisää yritysuutisia