Skip to main content

Hubble Confirms New Moons of Pluto

From Hubblesite.org

Astronomers using NASA's Hubble Space Telescope have confirmed the presence of two new moons around the distant planet Pluto. The moons were first discovered by Hubble in May 2005, but the Pluto Companion Search team probed even deeper into the Pluto system with Hubble on Feb. 15 to look for additional satellites and to characterize the orbits of the moons. In the image, Pluto is in the center and Charon is just below it. The moons, provisionally designated S/2005 P 1 and S/2005 P 2, are located to the right of Pluto and Charon.

Credit: NASA, ESA, H. Weaver (JHU/APL), A. Stern (SwRI), and the HST Pluto Companion Search Team


Free Image Hosting at ImageShack.us

Comments

Popular posts from this blog

Does light have mass?

The short answer is "no", but it is a qualified "no" because there are odd ways of interpreting the question which could justify the answer "yes". Light is composed of photons so we could ask if the photon has mass. The answer is then definitely "no": The photon is a massless particle. According to theory it has energy and momentum but no mass and this is confirmed by experiment to within strict limits. Even before it was known that light is composed of photons it was known that light carries momentum and will exert a pressure on a surface. This is not evidence that it has mass since momentum can exist without mass. [ For details see the Physics FAQ article What is the mass of the photon? ]. Sometimes people like to say that the photon does have mass because a photon has energy E = hf where h is Planck's constant and f is the frequency of the photon. Energy, they say, is equivalent to mass according to Einstein's famous formula E = m...

Play against Xbox360 gamer on PC in Vista

Microsoft Corp. co-founder Bill Gates on Tuesday announced a cross-platform gaming service that integrates games played on cell phones, Xbox 360 consoles and the upcoming Windows Vista operating system. The "Live Anywhere" service will be available as part of Windows Vista, Microsoft's next-generation PC operating system. The consumer version is scheduled for release early next year. "It means that you have one online community," Gates said in a news conference. "This platform can really unleash developers to do amazing new things." The system would extend the company's existing Xbox Live service for the Xbox 360 console into millions of Internet-enabled PCs and cellular phones. No pricing information on the new service was announced. In recent months, Microsoft has been pushing a number of online services that it hopes will boost revenue as markets for its traditional software become increasingly saturated. The company expects to make money off s...

Launchy: Free Windows Keystroke Launcher

"Launchy is a free windows utility designed to help you forget about your start menu, the icons on your desktop, and even your file manager." read more  |  digg story