The International Space Station. Credit: NASA

Sunday, July 29, 2012

COLD WAR RIVALS MEET IN SPACE CIRCA 1975


FROM: NASA
On July 17, 1975, something momentous happened: two Cold War-rivals met in space. When their respective spacecraft rendezvoused and docked, a new era of cooperative ventures in space began. For more than a decade, American astronauts and Russian cosmonauts have been regularly living and working together in Earth orbit, first in the Shuttle-Mir program, and now on the International Space Station. But, before the two Cold War-rivals first met in orbit in 1975, such a partnership seemed unlikely. Since Sputnik bleeped into orbit in 1957, there had been a Space Race, with the U.S. and then-Soviet Union driven more by competition than cooperation. When President Kennedy called for a manned moon landing in 1961, he spoke of "battle that is now going on around the world between freedom and tyranny" and referred to the "head start obtained by the Soviets with their large rocket engines." But by the mid-70s things had changed. The U.S. had "won" the race to the moon, with six Apollo landings between 1969 and 1972. Both nations had launched space stations, the Russian Salyut and American Skylab. With the space shuttle still a few years off and the diplomatic chill thawing, the time was right for a joint mission. The Apollo-Soyuz Test Project would send NASA astronauts Tom Stafford, Donald K. "Deke" Slayton and Vance Brand in an Apollo Command and Service Module to meet Russian cosmonauts Aleksey Leonov and Valeriy Kubasov in a Soyuz capsule. A jointly designed, U.S.-built docking module fulfilled the main technical goal of the mission, demonstrating that two dissimilar craft could dock in orbit. But the human side of the mission went far beyond that. Image Credit: NASA

Monday, July 23, 2012

Koordinování rádiových vln pro přenos dat z hlubin vesmíru

Koordinování rádiových vln pro přenos dat z hlubin vesmíru

Sunday, July 22, 2012

SHOCK-WAVE


FROM:  NASA
Using observations from NASA's Chandra X-ray Observatory, researchers have obtained the first X-ray evidence of a supernova shock wave breaking through a cocoon of gas surrounding the star that exploded. This discovery may help astronomers understand why some supernovas are much more powerful than others. On Nov. 3, 2010, a supernova was discovered in the galaxy UGC 5189A, located about 160 million light years away. Using data from the All Sky Automated Survey telescope in Hawaii taken earlier, astronomers determined this supernova exploded in early October 2010. This composite image of UGC 5189A shows X-ray data from Chandra in purple and optical data from Hubble Space Telescope in red, green and blue. SN 2010jl is the very bright X-ray source near the top of the galaxy. A team of researchers used Chandra to observe this supernova in December 2010 and again in October 2011. The supernova was one of the most luminous that has ever been detected in X-rays. In the first Chandra observation of SN 2010jl, the X-rays from the explosion's blast wave were strongly absorbed by a cocoon of dense gas around the supernova. This cocoon was formed by gas blown away from the massive star before it exploded. In the second observation taken almost a year later, there is much less absorption of X-ray emission, indicating that the blast wave from the explosion has broken out of the surrounding cocoon. The Chandra data show that the gas emitting the X-rays has a very high temperature -- greater than 100 million degrees Kelvin – strong evidence that it has been heated by the supernova blast wave. In a rare example of a cosmic coincidence, analysis of the X-rays from the supernova shows that there is a second unrelated source at almost the same location as the supernova. These two sources strongly overlap one another as seen on the sky. This second source is likely to be an ultraluminous X-ray source, possibly containing an unusually heavy stellar-mass black hole, or an intermediate mass black hole. Image Credit: X-ray: NASA/CXC/Royal Military College of Canada/P.Chandra et al); Optical: NASA/STScI

Auroras australes sobre la estación Concordia el 18 de julio

Auroras australes sobre la estación Concordia el 18 de julio

Sunday, July 15, 2012

NASA MARS PROGRAM OFFICAL DISCUSSES NEW ERA OF SPACE EXPLORATION


WASHINGTON -- Media representatives are invited to a briefing on 
Tuesday, July 10 at 9 a.m. BST at the 2012 Farnborough International
Airshow in Farnborough, England. NASA and industry officials will
discuss the importance of the space program and the role of
cost-efficient product development in the emerging new era of space
travel and exploration.

Doug McCuistion, director of NASA's Mars Exploration Program at NASA
Headquarters, Washington, and Siegfried Russwurm, CEO of Siemens
Industry Sector, Erlangen, Germany, will provide details and answer
questions about the importance of government and industry
collaboration to maximize productivity and efficiency in space
exploration. The briefing will take place the Hendon Room in the
airshow's media center.

Siemens software contributed to the development of NASA's most
advanced planetary rover, Curiosity, which will land on the surface
of Mars on Aug. 6 at 1:31 a.m. EDT. This mobile science laboratory
will assess whether the past or present Martian environment could
support life. The software was used for modeling during development
of the rover.

Sunday, July 1, 2012

ESA - ESA - Cassini discovers that Titan harbors an ocean beneath its surface

ESA - ESA - Cassini discovers that Titan harbors an ocean beneath its surface

André Kuipers regresa a la Tierra

André Kuipers regresa a la Tierra

HOUSTON WORKSHOP: FINDING WAYS TO EXPLORE THE RED PLANET


Photo:  The Famous Face On Mars.  Credit:  NASA.
FROM:  NASA
WASHINGTON -- A recent workshop conducted for NASA by the Lunar and 
Planetary Institute (LPI) in Houston, marked a key step in the 
agency's effort to forge a new Mars strategy in the coming decades. A 
report that summarizes the wide range of cutting-edge science, 
technology and mission concepts discussed is available online. 

Held in Houston June 12-14 and attended by scientists and engineers 
worldwide, the meeting was held to seek ideas, concepts and 
capabilities to address critical challenge areas in exploring the Red 
Planet. Discussions provided information for reformulating NASA's 
Mars Exploration Program (MEP) to be responsive to high-priority 
science goals and the challenge of sending humans to Mars orbit in 
the 2030s. 

Participants identified a number of possible approaches to missions 
that can be flown to Mars in the coming decade that would make 
progress toward returning Martian samples -- a top priority of the 
Planetary Science Decadal Survey -- and make significant advances in 
scientific understanding of the planet, developing key technologies 
and advancing knowledge necessary for human exploration on and around 
Mars. 

NASA's Mars Program Planning Group (MPPG), tasked with developing 
options for a reformulated MEP, will consider the workshop inputs in 
addition to budgetary, programmatic, scientific and technical 
constraints. 

"Scientists and engineers came together to present their most creative 
ideas for exploring Mars," said John Grunsfeld, an astronaut, 
astrophysicist and associate administrator for NASA's Science Mission 
Directorate at NASA Headquarters in Washington. "Great ideas come 
from challenging the best and brightest and igniting their passion 
and determination to succeed." 

The MPPG reports to Grunsfeld, who chairs the agency-wide Mars 
reformulation effort along with William Gerstenmaier, NASA's 
associate administrator for Human Exploration and Operations Mission 
Directorate, Chief Scientist Waleed Abdalati and Chief Technologist 
Mason Peck. The official draft MPPG report is expected to be 
delivered to NASA for review at the end of the summer. 

Concepts put forth tapped into significant benefits that could be 
gained from technology investments by NASA's Science Mission 
Directorate, Human Exploration and Operations Mission Directorate, 
and Office of the Chief Technologist. The participants also stressed 
the importance of establishing international collaboration early in 
the planning process and sustaining it throughout future missions. 

"Future Mars exploration missions will require new concepts and 
technologies," said Michael Gazarik, director of NASA's Space 
Technology Program. "There were many innovative and transformational 
concepts presented at the workshop. With continued investments in 
cutting-edge technology, these will lead to increased capability, 
reduced mission risk and lower mission costs." 

Workshop attendance included almost 200 scientists, engineers and 
graduate students from academia, NASA centers, federal laboratories, 
industry, and international partner organizations. More than 1,600 
people participated online as the workshop proceedings were streamed 
live on the Internet. 

"The LPI workshop provided a broad set of ideas for Mars exploration, 
including synergies between science, human exploration and technology 
development," Gerstenmaier said. "The number of workshop participants 
demonstrates the broad interest in Mars exploration." 

The workshop provided a forum for broad community input on near-term 
mission concepts. Ideas for longer-term activities will be used to 
inform program architecture planning beyond the early 2020s. Workshop 
results represent individual perspectives from members of the 
scientific and technical community. 

"The scientific and technical community has given us quite a range of 
ideas to consider in reformulating the Mars Exploration Program," 
said Doug McCuistion, director of NASA's Mars Exploration Program at 
the agency's headquarters. "Many concepts presented are highly 
relevant to the challenges the MPPG must address." 

NASA will land its most advanced rover, Curiosity, on the surface of 
Mars in August. This mobile science laboratory will assess whether 
the past or present environment on Mars could support life. In 2013, 
NASA will launch the Mars Atmosphere and Volatile Evolution orbiter, 
the first mission devoted to understanding the Martian upper 
atmosphere.