Planet Jupiter emits weird sounds or so called "electromagnetic voices" recorded by NASA-Voyager. To hear Jupiter speak listen to the video below.

ജൂപ്പിറ്ററിനെത്തേടി ജൂനോ യാത്രയായി

സൌരോര്‍ജ്ജം കൊണ്ട് പ്രവര്‍ത്തിക്കുന്ന ശൂന്യാകാശവാഹനം ജൂനോ, വ്യാഴ ഗ്രഹത്തിലേയ്ക്കുള്ള തന്‍റെ അഞ്ചുവര്‍ഷത്തെ യാത്ര ആരംഭിച്ചു. 2800 മില്യണ്‍ കിലോമീറ്റര്‍ ദൂരംതാണ്ടി 2016-ല്‍ മാത്രമേ ജൂനോ വ്യാഴത്തിലെത്തൂ. വ്യാഴത്തിന്‍റെ ഉത്ഭവവും പരിണാമവും ജൂനോ പഠിക്കും

ഗ്രീക്ക് പുരാണമനുസരിച്ച് ജൂപ്പിറ്ററിന്‍റെ (വ്യാഴം) ഭാര്യയാണ് ജൂനോ. മേഘത്തിനിടയില്‍ ഒളിച്ചിരിക്കുന്ന ജൂപ്പിറ്റര്‍ ദേവന്‍റെ തനിനിറം കാണാന്‍ ജൂനോ ദേവി മേഘപാളികള്‍ക്കുമുകളിലെത്തിയെന്നാണ് പുരാണം.

Juno's detailed study of the largest planet in our solar system will help reveal Jupiter's origin and evolution. As the archetype of giant gas planets, Jupiter can help scientists understand the origin of our solar system and learn more about planetary systems around other stars.

"Today, with the launch of the Juno spacecraft, NASA began a journey to yet another new frontier," NASA Administrator Charles Bolden said. "The future of exploration includes cutting-edge science like this to help us better understand our solar system and an ever-increasing array of challenging destinations."

After Juno's launch aboard an Atlas V rocket, mission controllers now await telemetry from the spacecraft indicating it has achieved its proper orientation, and that its massive solar arrays, the biggest on any NASA deep-space probe, have deployed and are generating power.

"We are on our way, and early indications show we are on our planned trajectory," said Jan Chodas, Juno project manager at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "We will know more about Juno's status in a couple hours after its radios are energized and the signal is acquired by the Deep Space Network antennas at Canberra."

Juno will cover the distance from Earth to the moon (about 250,000 miles or 402,336 kilometers) in less than one day's time. It will take another five years and 1,740 million miles (2,800 million kilometers) to complete the journey to Jupiter. The spacecraft will orbit the planet's poles 33 times and use its collection of eight science instruments to probe beneath the gas giant's obscuring cloud cover to learn more about its origins, structure, atmosphere and magnetosphere, and look for a potential solid planetary core.

With four large moons and many smaller moons, Jupiter forms its own miniature solar system. Its composition resembles that of a star, and if it had been about 80 times more massive, the planet could have become a star instead.

"Jupiter is the Rosetta Stone of our solar system," said Scott Bolton, Juno's principal investigator from the Southwest Research Institute in San Antonio. "It is by far the oldest planet, contains more material than all the other planets, asteroids and comets combined, and carries deep inside it the story of not only the solar system but of us. Juno is going there as our emissary -- to interpret what Jupiter has to say."

Juno's name comes from Greek and Roman mythology. The god Jupiter drew a veil of clouds around himself to hide his mischief, and his wife, the goddess Juno, was able to peer through the clouds and reveal Jupiter's true nature.

The NASA Deep Space Network -- or DSN -- is an international network of antennas that supports interplanetary spacecraft missions and radio and radar astronomy observations for the exploration of the solar system and the universe. The network also supports selected Earth-orbiting missions.

JPL manages the Juno mission for the principal investigator, Scott Bolton, of Southwest Research Institute in San Antonio. The Juno mission is part of the New Frontiers Program managed at NASA's Marshall Space Flight Center in Huntsville, Ala. Lockheed Martin Space Systems, Denver, built the spacecraft. Launch management for the mission is the responsibility of NASA's Launch Services Program at the Kennedy Space Center in Florida. JPL is a division of the California Institute of Technology in Pasadena.

For more information about Juno, visit http://www.nasa.gov/juno and http://missionjuno.swri.edu

ചൊവ്വയില്‍ ഒഴുകുന്ന വെള്ളത്തിന്‍റെ സാന്നിധ്യം

ചൊവ്വയില്‍ ഒഴുകുന്ന വെള്ളത്തിന്‍റെ സാന്നിധ്യം നാസ (NASA) കണ്ടെത്തി. ചൂടുകുടുതലുള്ള മാസങ്ങളില്‍ ദ്രവരൂപത്തില്‍ ഒഴുകുന്ന വെള്ളത്തിന്‍റെ സാന്നിധ്യം കണ്ടെത്തി. വേനല്‍ക്കാലത്ത് ദ്രൂവരൂപത്തിലാകുന്ന ജലം ശരത്കാലത്ത് മഞ്ഞുപാളികളായി ഉറയുന്നുവെന്ന് നാസ പറയുന്നു.

Oblique View of Warm Season Flows in Newton Crater

An image combining orbital imagery with 3-D modeling shows flows that appear in spring and summer on a slope inside Mars' Newton crater. Sequences of observations recording the seasonal changes at this site and a few others with similar flows might be evidence of salty liquid water active on Mars today. Evidence for that possible interpretation is presented in a report by McEwen et al. in the Aug. 5, 2011, edition of Science.

This image has been reprojected to show a view of a slope as it would be seen from a helicopter inside the crater, with a synthetic Mars-like sky. The source observation was made May 30, 2011, by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. Color has been enhanced. The season was summer at the location, 41.6 degrees south latitude, 202.3 degrees east longitude.

The flow features are narrow (one-half to five yards or meters wide), relatively dark markings on steep (25 to 40 degree) slopes at several southern hemisphere locations. Repeat imaging by HiRISE shows the features appear and incrementally grow during warm seasons and fade in cold seasons.

HiRISE is operated by the University of Arizona, Tucson, and the instrument was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems, Denver, built the spacecraft.

Other imagery related to these new findings from the Mars Reconnaissance Orbiter is at http://www.nasa.gov/mission_pages/MRO/multimedia/gallery/gallery-index.html .

Image credit: NASA/JPL-Caltech/Univ. of Arizona

Warm-Season Flows on Slope in Newton Crater

This series of images shows warm-season features that might be evidence of salty liquid water active on Mars today. Evidence for that possible interpretation is presented in a report by McEwen et al. in the Aug. 5, 2011, edition of Science.

These images come from observations of Newton crater, at 41.6 degrees south latitude, 202.3 degrees east longitude, by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. In time, the series spans from early spring of one Mars year to mid-summer of the following year. The images have been adjusted to correct those taken from oblique angles to show how the scene would look from directly overhead.

The features that extend down the slope during warm seasons are called recurring slope lineae. They are narrow (one-half to five yards or meters wide), relatively dark markings on steep (25 to 40 degree) slopes at several southern hemisphere locations. Repeat imaging by HiRISE shows the features appear and incrementally grow during warm seasons and fade in cold seasons. They extend downslope from bedrock outcrops, often associated with small channels, and hundreds of them form in rare locations. They appear and lengthen in the southern spring and summer from 48 degrees to 32 degrees south latitudes favoring equator-facing slopes. These times and places have peak surface temperatures from about 10 degrees below zero Fahrenheit to 80 degree above zero Fahrenheit (about 250 to 300 Kelvin). Liquid brines near the surface might explain this activity, but the exact mechanism and source of the water are not understood.

The series is timed to dwell two seconds on the first and last frames and one second on intermediate frames, though network or computer performance may cause this to vary.