Posts Tagged ‘News’

Signs Changing Fast for Voyager at Solar System Edge

Saturday, August 25th, 2012

Source – NASA/JPL:

This artist’s concept shows NASA’s two Voyager spacecraft exploring a turbulent region of space known as the heliosheath, the outer shell of the bubble of charged particles around our sun. Image credit: NASA/JPL-Caltech

August 03, 2012

Two of three key signs of changes expected to occur at the boundary of interstellar space have changed faster than at any other time in the last seven years, according to new data from NASA’s Voyager 1 spacecraft.

For the last seven years, Voyager 1 has been exploring the outer layer of the bubble of charged particles the sun blows around itself. In one day, on July 28, data from Voyager 1’s cosmic ray instrument showed the level of high-energy cosmic rays originating from outside our solar system jumped by five percent. During the last half of that same day, the level of lower-energy particles originating from inside our solar system dropped by half. However, in three days, the levels had recovered to near their previous levels.

A third key sign is the direction of the magnetic field, and scientists are eagerly analyzing the data to see whether that has, indeed, changed direction. Scientists expect that all three of these signs will have changed when Voyager 1 has crossed into interstellar space. A preliminary analysis of the latest magnetic field data is expected to be available in the next month.

“These are thrilling times for the Voyager team as we try to understand the quickening pace of changes as Voyager 1 approaches the edge of interstellar space,” said Edward Stone, the Voyager project scientist based at the California Institute of Technology, Pasadena, Calif. “We are certainly in a new region at the edge of the solar system where things are changing rapidly. But we are not yet able to say that Voyager 1 has entered interstellar space.”

The levels of high-energy cosmic ray particles have been increasing for years, but more slowly than they are now. The last jump — of five percent — took one week in May. The levels of lower-energy particles from inside our solar system have been slowly decreasing for the last two years. Scientists expect that the lower-energy particles will drop close to zero when Voyager 1 finally crosses into interstellar space.

“The increase and the decrease are sharper than we’ve seen before, but that’s also what we said about the May data,” Stone said. “The data are changing in ways that we didn’t expect, but Voyager has always surprised us with new discoveries.”

Voyager 1, which launched on Sept. 5, 1977, is 11 billion miles (18 billion kilometers) from the sun. Voyager 2, which launched on Aug. 20, 1977, is close behind, at 9.3 billion miles (15 billion kilometers) from the sun.

“Our two veteran Voyager spacecraft are hale and healthy as they near the 35th anniversary of their launch,” said Suzanne Dodd, Voyager project manager based at NASA’s Jet Propulsion Laboratory, Pasadena. “We know they will cross into interstellar space. It’s just a question of when.”

The Voyager spacecraft were built by JPL, which continues to operate both. JPL is a division of the California Institute of Technology. The Voyager missions are a part of the NASA Heliophysics System Observatory, sponsored by the Heliophysics Division of the Science Mission Directorate in Washington.

For more information about the Voyager spacecraft, visit: http://www.nasa.gov/voyager .

Mars Rover Begins Driving at Bradbury Landing

Saturday, August 25th, 2012

Source – NASA/JPL Mars Science Laboratory:

PASADENA, Calif. — NASA’s Mars rover Curiosity has begun driving from its landing site, which scientists announced today they have named for the late author Ray Bradbury.

Making its first movement on the Martian surface, Curiosity’s drive combined forward, turn and reverse segments. This placed the rover roughly 20 feet (6 meters) from the spot where it landed 16 days ago.

NASA has approved the Curiosity science team’s choice to name the landing ground for the influential author, who was born 92 years ago today and died this year. The location where Curiosity touched down is now called Bradbury Landing.

“This was not a difficult choice for the science team,” said Michael Meyer, NASA program scientist for Curiosity. “Many of us and millions of other readers were inspired in our lives by stories Ray Bradbury wrote to dream of the possibility of life on Mars.”

Today’s drive confirmed the health of Curiosity’s mobility system and produced the rover’s first wheel tracks on Mars, documented in images taken after the drive. During a news conference today at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., the mission’s lead rover driver, Matt Heverly, showed an animation derived from visualization software used for planning the first drive.

“We have a fully functioning mobility system with lots of amazing exploration ahead,” Heverly said.

Curiosity will spend several more days of working beside Bradbury Landing, performing instrument checks and studying the surroundings, before embarking toward its first driving destination approximately 1,300 feet (400 meters) to the east-southeast.

“Curiosity is a much more complex vehicle than earlier Mars rovers. The testing and characterization activities during the initial weeks of the mission lay important groundwork for operating our precious national resource with appropriate care,” said Curiosity Project Manager Pete Theisinger of JPL. “Sixteen days in, we are making excellent progress.”

The science team has begun pointing instruments on the rover’s mast for investigating specific targets of interest near and far. The Chemistry and Camera (ChemCam) instrument used a laser and spectrometers this week to examine the composition of rocks exposed when the spacecraft’s landing engines blew away several inches of overlying material.

The instrument’s principal investigator, Roger Weins of Los Alamos National Laboratory in New Mexico, reported that measurements made on the rocks in this scoured-out feature called Goulburn suggest a basaltic composition. “These may be pieces of basalt within a sedimentary deposit,” Weins said.

Curiosity began a two-year prime mission on Mars when the Mars Science Laboratory spacecraft delivered the car-size rover to its landing target inside Gale Crater on Aug. 5 PDT (Aug. 6 EDT). The mission will use 10 science instruments on the rover to assess whether the area has ever offered environmental conditions favorable for microbial life.

In a career spanning more than 70 years, Ray Bradbury inspired generations of readers to dream, think and create. A prolific author of hundreds of short stories and nearly 50 books, as well as numerous poems, essays, operas, plays, teleplays and screenplays, Bradbury was one of the most celebrated writers of our time.

His groundbreaking works include “Fahrenheit 451,” “The Martian Chronicles,” “The Illustrated Man,” “Dandelion Wine,” and “Something Wicked This Way Comes.” He wrote the screenplay for John Huston’s classic film adaptation of “Moby Dick,” and was nominated for an Academy Award. He adapted 65 of his stories for television’s The Ray Bradbury Theater, and won an Emmy for his teleplay of “The Halloween Tree.”

JPL manages the Mars Science Laboratory/Curiosity for NASA’s Science Mission Directorate in Washington. The rover was designed, developed and assembled at JPL, a division of the California Institute of Technology in Pasadena.

More information about Curiosity is online at:
http://www.nasa.gov/msl and http://mars.jpl.nasa.gov/msl .

Follow the mission on Facebook at: http://www.facebook.com/marscuriosity and on Twitter at:
http://www.twitter.com/marscuriosity .

Guy Webster/D.C. Agle 818-354-6278/818-393-9011
Jet Propulsion Laboratory, Pasadena, Calif.
Guy.webster@jpl.nasa.gov / agle@jpl.nasa.gov
Dwayne Brown 202-358-1726
NASA Headquarters, Washington
Dwayne.c.brown@nasa.gov

Neil Armstrong: 1930-2012

Saturday, August 25th, 2012

Source – NASA:

Neil Armstrong, the first man to walk on the moon during the 1969 Apollo 11 mission, has died, following complications resulting from cardiovascular procedures. He was 82.

Armstrong’s words “That is one small step for (a) man, one giant leap for mankind,” spoken on July 20, 1969, as he became the first person ever to step onto another planetary body, instantly became a part of history.

Those few words from the Sea of Tranquillity were the climactic fulfillment of the efforts and hopes of millions of people and the expenditure of billions of dollars. A plaque on one of the lander’s legs that concluded “We came in peace for all mankind,” further emphasized that Armstrong and fellow astronaut Edwin “Buzz” Aldrin were there as representatives of all humans.

Armstrong is survived by his wife, two sons, a stepson, a stepdaughter, 10 grandchildren, and a brother and sister.

“Neil Armstrong was a hero not just of his time, but of all time,” said President Barack Obama. “Thank you, Neil, for showing us the power of one small step.”

Armstrong’s family released the following statement on Saturday:

“Neil Armstrong was also a reluctant American hero who always believed he was just doing his job. He served his Nation proudly, as a navy fighter pilot, test pilot, and astronaut. He also found success back home in his native Ohio in business and academia, and became a community leader in Cincinnati.

While we mourn the loss of a very good man, we also celebrate his remarkable life and hope that it serves as an example to young people around the world to work hard to make their dreams come true, to be willing to explore and push the limits, and to selflessly serve a cause greater than themselves.

The family will be providing further updates at
www.neilarmstronginfo.com .

Video Shows Rover Heat Shield Hit Mars, Create Dust Cloud

Saturday, August 18th, 2012

Source – NASA/JPL:

Heat Shield, Meet Mars
08.17.12
This sequence of images shows the heat shield from NASA’s Mars Science Laboratory hitting the ground on Mars and raising a cloud of dust


Embedded video from

NASA Jet Propulsion Laboratory California Institute of Technology

What it took to get curiosity to the surface of Mars…

Monday, August 6th, 2012

Touch Down…… For NASA New Rover on Mars…

Monday, August 6th, 2012

Source – NASA:

NASA Lands Car-Size Rover Beside Martian Mountain

PASADENA, Calif. — NASA’s most advanced Mars rover Curiosity has landed on the Red Planet. The one-ton rover, hanging by ropes from a rocket backpack, touched down onto Mars Sunday to end a 36-week flight and begin a two-year investigation.

The Mars Science Laboratory (MSL) spacecraft that carried Curiosity succeeded in every step of the most complex landing ever attempted on Mars, including the final severing of the bridle cords and flyaway maneuver of the rocket backpack.

“Today, the wheels of Curiosity have begun to blaze the trail for human footprints on Mars. Curiosity, the most sophisticated rover ever built, is now on the surface of the Red Planet, where it will seek to answer age-old questions about whether life ever existed on Mars — or if the planet can sustain life in the future,” said NASA Administrator Charles Bolden. “This is an amazing achievement, made possible by a team of scientists and engineers from around the world and led by the extraordinary men and women of NASA and our Jet Propulsion Laboratory. President Obama has laid out a bold vision for sending humans to Mars in the mid-2030’s, and today’s landing marks a significant step toward achieving this goal.”

Curiosity landed at 10:32 p.m. Aug. 5, PDT, (1:32 a.m. EDT Aug. 6) near the foot of a mountain three miles tall and 96 miles in diameter inside Gale Crater. During a nearly two-year prime mission, the rover will investigate whether the region ever offered conditions favorable for microbial life.

“The Seven Minutes of Terror has turned into the Seven Minutes of Triumph,” said NASA Associate Administrator for Science John Grunsfeld. “My immense joy in the success of this mission is matched only by overwhelming pride I feel for the women and men of the mission’s team.”

Curiosity returned its first view of Mars, a wide-angle scene of rocky ground near the front of the rover. More images are anticipated in the next several days as the mission blends observations of the landing site with activities to configure the rover for work and check the performance of its instruments and mechanisms.

“Our Curiosity is talking to us from the surface of Mars,” said MSL Project Manager Peter Theisinger of NASA’s Jet Propulsion Laboratory in Pasadena, Calif. “The landing takes us past the most hazardous moments for this project, and begins a new and exciting mission to pursue its scientific objectives.”

Confirmation of Curiosity’s successful landing came in communications relayed by NASA’s Mars Odyssey orbiter and received by the Canberra, Australia, antenna station of NASA’s Deep Space Network.

Curiosity carries 10 science instruments with a total mass 15 times as large as the science payloads on the Mars rovers Spirit and Opportunity. Some of the tools are the first of their kind on Mars, such as a laser-firing instrument for checking elemental composition of rocks from a distance. The rover will use a drill and scoop at the end of its robotic arm to gather soil and powdered samples of rock interiors, then sieve and parcel out these samples into analytical laboratory instruments inside the rover.

To handle this science toolkit, Curiosity is twice as long and five times as heavy as Spirit or Opportunity. The Gale Crater landing site places the rover within driving distance of layers of the crater’s interior mountain. Observations from orbit have identified clay and sulfate minerals in the lower layers, indicating a wet history.

The mission is managed by JPL for NASA’s Science Mission Directorate in Washington. The rover was designed, developed and assembled at JPL. JPL is a division of the California Institute of Technology in Pasadena.

For more information on the mission, visit: http://www.nasa.gov/mars and http://marsprogram.jpl.nasa.gov/msl.

Follow the mission on Facebook and Twitter at: http://www.facebook.com/marscuriosity And http://www.twitter.com/marscuriosity.

Guy Webster / D.C. Agle 818-354-6278 / 818-393-9011
Jet Propulsion Laboratory, Pasadena, Calif.
guy.webster@jpl.nasa.gov / agle@jpl.nasa.gov

Dwayne Brown 202-358-1726
NASA Headquarters, Washington
dwayne.c.brown@nasa.gov

2012-230

Newly Discovered Large Asteroid Passes by Earth

Friday, June 15th, 2012

Source – Slooh Space Camera:

During its closest approach at 8 p.m. ET Thursday Slooh will attempt to track newly discovered near-Earth Asteroid 2012 LZ1 as it makes its close approach to Earth. 2012 LZ1 is over 1,600 feet (500-meter) wide about the size of a city block and about 14 Moon (3.3 million miles or 5.3 million kilometers) distances from Earth. The asteroid was never close enough to threaten Earth

Live Web Cast of the 2012 Transit of Venus

Tuesday, June 5th, 2012

Source – NASA TV:



Live Video app for Facebook by Ustream

NASA Discovers First Earth-size Planets Beyond Our Solar System

Tuesday, December 20th, 2011

Source – NASA /JPL Kepler:

MOFFET FIELD, Calif. — NASA’s Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system. The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in the so-called habitable zone where liquid water could exist on a planet’s surface, but they are the smallest exoplanets ever confirmed around a star like our sun.

The discovery marks the next important milestone in the ultimate search for planets like Earth. The new planets are thought to be rocky. Kepler-20e is slightly smaller than Venus, measuring 0.87 times the radius of Earth. Kepler-20f is a bit larger than Earth, measuring 1.03 times its radius. Both planets reside in a five-planet system called Kepler-20, approximately 1,000 light-years away in the constellation Lyra.

Kepler-20e orbits its parent star every 6.1 days and Kepler-20f every 19.6 days. These short orbital periods mean very hot, inhospitable worlds. Kepler-20f, at 800 degrees Fahrenheit, is similar to an average day on the planet Mercury. The surface temperature of Kepler-20e, at more than 1,400 degrees Fahrenheit, would melt glass.

“The primary goal of the Kepler mission is to find Earth-sized planets in the habitable zone,” said Francois Fressin of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., lead author of a new study published in the journal Nature. “This discovery demonstrates for the first time that Earth-size planets exist around other stars, and that we are able to detect them.”

The Kepler-20 system includes three other planets that are larger than Earth but smaller than Neptune. Kepler-20b, the closest planet, Kepler-20c, the third planet, and Kepler-20d, the fifth planet, orbit their star every 3.7, 10.9 and 77.6 days. All five planets have orbits lying roughly within Mercury’s orbit in our solar system. The host star belongs to the same G-type class as our sun, although it is slightly smaller and cooler.

The system has an unexpected arrangement. In our solar system, small, rocky worlds orbit close to the sun and large, gaseous worlds orbit farther out. In comparison, the planets of Kepler-20 are organized in alternating size: large, small, large, small and large.

“The Kepler data are showing us some planetary systems have arrangements of planets very different from that seen in our solar system,” said Jack Lissauer, planetary scientist and Kepler science team member at NASA’s Ames Research Center in Moffett Field, Calif. “The analysis of Kepler data continue to reveal new insights about the diversity of planets and planetary systems within our galaxy.”

Scientists are not certain how the system evolved but they do not think the planets formed in their existing locations. They theorize the planets formed farther from their star and then migrated inward, likely through interactions with the disk of material from which they originated. This allowed the worlds to maintain their regular spacing despite alternating sizes.

The Kepler space telescope detects planets and planet candidates by measuring dips in the brightness of more than 150,000 stars to search for planets crossing in front, or transiting, their stars. The Kepler science team requires at least three transits to verify a signal as a planet.

The Kepler science team uses ground-based telescopes and the Spitzer Space Telescope to review observations on planet candidates the spacecraft finds. The star field Kepler observes in the constellations Cygnus and Lyra can be seen only from ground-based observatories in spring through early fall. The data from these other observations help determine which candidates can be validated as planets.

To validate Kepler-20e and Kepler-20f, astronomers used a computer program called Blender, which runs simulations to help rule out other astrophysical phenomena masquerading as a planet.

On Dec. 5 the team announced the discovery of Kepler-22b in the habitable zone of its parent star. It is likely to be too large to have a rocky surface. While Kepler-20e and Kepler-20f are Earth-size, they are too close to their parent star to have liquid water on the surface.

“In the cosmic game of hide and seek, finding planets with just the right size and just the right temperature seems only a matter of time,” said Natalie Batalha, Kepler deputy science team lead and professor of astronomy and physics at San Jose State University. “We are on the edge of our seats knowing that Kepler’s most anticipated discoveries are still to come.”

NASA’s Ames Research Center in Moffett Field, Calif., manages Kepler’s ground system development, mission operations and science data analysis. JPL managed the Kepler mission’s development.

Ball Aerospace and Technologies Corp. in Boulder, Colo., developed the Kepler flight system and supports mission operations with the Laboratory for Atmospheric and Space Physics at the University of Colorado in Boulder.

The Space Telescope Science Institute in Baltimore archives, hosts and distributes Kepler science data. Kepler is NASA’s 10th Discovery Mission and is funded by NASA’s Science Mission Directorate at the agency’s headquarters in Washington.

For more information about the Kepler mission and to view the digital press kit, visit: http://www.nasa.gov/kepler

What’s Up for December 2011?

Sunday, December 11th, 2011

Source – NASA /JPL Solar System Exploration:

A mission recap and lots of planets to view.