Knowtex

Grâce aux images du télescope spatial Herschel, les astrophysiciens viennent pour la première fois de dévoiler la fabrication, jusqu'alors invisible, d'amas d'étoiles.

Une vidéo à l'occasion des 15 ans du télescope spatial Hubble.

Galileo Galilei was an Italian physicist, mathematician, astronomer, and philosopher who played a major role in the Scientific Revolution. Stephen Hawking says, "Galileo, perhaps more than any other single person, was responsible for the birth of modern science."

The science of astronomy took a huge leap forward in the first decade of the 1600s with the invention of the optical telescope and its use to study the night sky. Galileo did not invent the telescope but was the first to use it systematically to observe celestial objects and record his discoveries.

The telescope changed our lives, and Richard Panek's book Seeing and Believing is about how it happened. We learn for instance, that Galileo did not "invent" the telescope in 1609, as is popularly supposed, nor was he even the first to think of using it for scientific exploration.

In the 19th century astronomers spent a lot of time seeking shadows crossing the sun. They were searching for Vulcan, a putative planet inside the orbit of Mercury.Sadly, there was no Vulcan to be found, but the method itself is sound, and it is the modus operandi of Kepler.

Physicist, mathematician, astronomer, philosopher, Galileo Galilei' improvements to the telescope led to the discovery of the four largest moons of Jupiter.

The upgraded Hubble Telescope continues to provide astonishing new glimpses of ever earlier stages of the universe.

Des instruments de plus en plus grands, des centaines de découvertes dans le cadre des théories existantes, et aucune révolution scientifique à l'horizon. Les sciences en 2009 ont avancé à vitesse constante avec puissance.

Planet-hunters discover two "super-Earths"- rocky planets- orbiting two nearby Sun-like stars.