background preloader


Facebook Twitter


The Perplexing Physics of Imaging a Black Hole. Katie Bouman: How a grad student at MIT made the first black hole image possible. Scientists Reveal the First Picture of a Black Hole. L'humanité contemple pour la première fois l'image d'un trou noir. Elle était très attendue, cette image ! Au départ un trou noir est une solution d’équation mathématique : il n'avait qu’une existence théorique, jusqu'à ce qu'on commence à en obtenir des indices concrets. Là, on a enfin une observation directe, un siècle après Einstein. Aujourd’hui, c’est un moment historique ; aussi historique que les détections des ondes gravitationnelles en 2015. On s’attendait à ce que cela soit une image de Sagittarius A*, le trou noir supermassif de notre Voie lactée. Mais en fait, il s’agit de M87*, le trou noir supermassif de la galaxie M87, qui est mille fois plus loin, mais surtout mille fois plus gros. L'article à lire pour comprendre les trous noirs.

Des astronomes ont révélé la première image d'un trou noir.

L'article à lire pour comprendre les trous noirs

C'est un événement inédit dans l'histoire de l'astronomie. Des scientifiques du monde entier ont dévoilé la première photographie d'un trou noir, mercredi 10 avril, dans le cadre du projet Event Horizon Telescope. Cette image a été obtenue en identifiant l'environnement immédiat de ces objets célestes extrêmement massifs et concentrés, puis en visualisant le pourtour lumineux créé lors l'absorption de la matière. Franceinfo revient sur les fondamentaux nécessaires pour mieux comprendre les trous noirs, qui fascinent depuis des décennies les scientifiques. Un trou noir, c'est quoi ? Il est fréquent d'entendre parler de trou noir dans les informations, les films ou les livres. "C'est la preuve définitive de leur existence" : pourquoi la photo inédite d'un trou noir constitue un exploit. First ever black hole image released. Image copyright EHT Astronomers have taken the first ever image of a black hole, which is located in a distant galaxy.

First ever black hole image released

It measures 40 billion km across - three million times the size of the Earth - and has been described by scientists as "a monster". The black hole is 500 million trillion km away and was photographed by a network of eight telescopes across the world. Event Horizon Telescope ready to image black hole. Image copyright Hotaka Shiokawa/CFA/HARVARD Scientists believe they are on the verge of obtaining the first ever picture of a black hole.

Event Horizon Telescope ready to image black hole

They have built an Earth-sized "virtual telescope" by linking a large array of radio receivers - from the South Pole, to Hawaii, to the Americas and Europe. Black Hole Image Makes History; NASA Telescopes Coordinate Observation. Margaret Hamilton, Lead Software Engineer of the Apollo Project, Stands Next to Her Code That Took Us to the Moon (1969) Photo courtesy of MIT Museum When I first read news of the now-infamous Google memo writer who claimed with a straight face that women are biologically unsuited to work in science and tech, I nearly choked on my cereal.

Margaret Hamilton, Lead Software Engineer of the Apollo Project, Stands Next to Her Code That Took Us to the Moon (1969)

A dozen examples instantly crowded to mind of women who have pioneered the very basis of our current technology while operating at an extreme disadvantage in a culture that explicitly believed they shouldn’t be there, this shouldn’t be happening, women shouldn’t be able to do a “man’s job!” The memo, as Megan Molteni and Adam Rogers write at Wired, “is a species of discourse peculiar to politically polarized times: cherry-picking scientific evidence to support a pre-existing point of view.”

Its specious evolutionary psychology pretends to objectivity even as it ignores reality. As Mulder would say, the truth is out there, if you care to look, and you don’t need to dig through classified FBI files.


Sun. Space map. Rosetta - philae. Telescope Reveals Record-Breaking Exoplanet Discovery. This illustration shows the possible surface of TRAPPIST-1f, one of the newly discovered planets in the TRAPPIST-1 system.

Telescope Reveals Record-Breaking Exoplanet Discovery

Scientists using the Spitzer Space Telescope and ground-based telescopes have discovered that there are seven Earth-size planets in the system. Credits: NASA/JPL-Caltech NASA's Spitzer Space Telescope has revealed the first known system of seven Earth-size planets around a single star. ‘First protest in space’ targets Trump with an astronaut’s famous words. On Wednesday, 56 years to the day after Russian cosmonaut Yuri Gagarin became the first human in space, a Phoenix-based collective called the Autonomous Space Agency Network launched a weather balloon to about 90,000 feet.

‘First protest in space’ targets Trump with an astronaut’s famous words

The balloon, Aphrodite 1, weighed a little over a pound and was inflated with 120 cubic feet of helium. Aphrodite 1's payload consisted of a GPS sensor, a camera and a message for President Trump. It was a printout of a tweet that read, “@realDonaldTrump: Look at that, you son of a bitch.” “To our knowledge, the Aphrodite 1 launch was the first political protest in near space,” a member of the group wrote to The Washington Post in an email. Image and Video Library. Project apollo archive. Computational High-Energy Astrophysics Group of Stephan Rosswog. NASA Makes Dozens of Patents Available in Public Domain to Benefit U.S. Industry. WASHINGTON, May 5, 2016 /PRNewswire-USNewswire/ -- NASA has released 56 formerly-patented agency technologies into the public domain, making its government-developed technologies freely available for unrestricted commercial use.

NASA Makes Dozens of Patents Available in Public Domain to Benefit U.S. Industry

In addition to the release of these technologies, a searchable database now is available that catalogues thousands of expired NASA patents already in the public domain. These technologies were developed to advance NASA missions but may have non-aerospace applications and be used by commercial space ventures and other companies free of charge, eliminating the time, expense and paperwork often associated with licensing intellectual property. The technologies include advanced manufacturing processes, sensors, propulsion methods, rocket nozzles, thrusters, aircraft wing designs and improved rocket safety and performance concepts. SpaceX's Landing Drone Ship Is Just As Complicated As The Rocket. MSL Curiosity. The Rich Color Variations of Pluto. NASA scientist Nikolaos Paschalidis, who recreated five instrument-enabling microchips for one of the instruments flying on the New Horizons mission, has waited nearly 10 years for the mission to reach its destination.

The Rich Color Variations of Pluto

Credits: NASA Goddard/Bill Hrybyk. Margaret Hamilton, the Engineer Who Took the Apollo to the Moon. Margaret Hamilton, the Engineer Who Took the Apollo to the Moon We interviewed this computer science pioneer after her photo with the Apollo 11 mission code conquered Twitter JD (@nevesytrof) tweeted this photo of Margaret Hamilton a couple of weeks ago with great success among his followers.

Margaret Hamilton, the Engineer Who Took the Apollo to the Moon

And he was not the only one who published the picture. The photo, taken in 1969, shows this mathematician and computer science pioneer beside the software listings that were essential for the Apollo XI mission — it was thanks to her that Neil Armstrong and Buzz Aldrin could take a walk on the Moon. Tweetstory Ariane L01 de CNES sur Twitter. ISS HD Earth Viewing Experiment on USTREAM: ***QUICK NOTES ABOUT HDEV VIDEO*** Black Image = International Space Station (ISS) is on the night side of the. Black Image = International Space Station (ISS) is on the night side of the Earth.

ISS HD Earth Viewing Experiment on USTREAM: ***QUICK NOTES ABOUT HDEV VIDEO*** Black Image = International Space Station (ISS) is on the night side of the

No Audio = Normal. There is no audio by design. Add your own soundtrack. For a display of the real time ISS location plus the HDEV imagery, visit here: The Gateway to Astronaut Photography of Earth. The High Definition Earth Viewing (HDEV) experiment aboard the ISS was activated April 30, 2014. It is mounted on the External Payload Facility of the European Space Agency’s Columbus module. This experiment includes several commercial HD video cameras aimed at the Earth which are enclosed in a pressurized and temperature controlled housing. Découverte de la première exoplanète de la taille de la Terre en zone habitable d'une étoile.

Dans un contexte de nombreuses découvertes d’exoplanètes, plus de 1400 à ce jour, une collaboration internationale impliquant des chercheurs du Laboratoire d’Astrophysique de Bordeaux (Observatoire Aquitain des Sciences de l’Univers/CNRS/Université de Bordeaux) a découvert un système planétaire fascinant. Ce système situé à 400 années lumières, dans notre galaxie, possède au moins 5 planètes, toutes de la taille de la Terre. L’une d’elles, au centre de cette étude, reçoit de son étoile un flux de chaleur compatible avec l’existence d’eau liquide à sa surface, si toutefois de l’eau se trouve sur cette planète.

Ces résultats ont été publiés le 18 avril dans la revue Science. Shuttle Launch from Space. NASA TV. Beyond 2012: Why the World Won't End. Beyond 2012: Why the World Didn't End If you're reading this story, it means the world didn't end on Dec. 21, 2012. Detecting the ‘Bang’ from the Big Bang. BICEP2 2014 Results Release. First Direct Evidence of Cosmic Inflation. Almost 14 billion years ago, the universe we inhabit burst into existence in an extraordinary event that initiated the Big Bang. In the first fleeting fraction of a second, the universe expanded exponentially, stretching far beyond the view of our best telescopes.

New Hubble space telescope image peers 13 billion years back in time. Men Walk On Moon <p/> New Station Flight Control Room. New Station Flight Control Room + High resolution photo (1.5 Mb) + Low resolution photo (59 Kb) JSC2006-E-43842 (6 Oct. 2006)--- Astronaut Julie Payette, spacecraft communicator (CAPCOM), and John McCullough, flight director, support the Expedition 14 mission.

International Space Station flight controllers have this area as their new home with increased technical capabilities, more workspace and a long, distinguished history. The newly updated facility is just down the hall from its predecessor at NASA's Johnson Space Center, Houston. Known as Flight Control Room 1, it was first used to control a space flight 38 years ago, the mission of Apollo 7 launched Oct. 11, 1968.

. + High resolution photo (1.5 Mb) + Low resolution photo (69 Kb) Typhoon Haiyan as seen from space: The best images from the web. Devastating, powerful and deadly, typhoons can cause unimaginable destruction. For those of us lucky enough to be outside their path, they are also one of mother nature’s most magnificent spectacles, often best viewed from above. Here are our favourite satellite images of Typhoon Haiyan (Yolanda), the biggest typhoon ever recorded, from our news sources and around the web.