Mostrando postagens com marcador NASA breaking news. Mostrar todas as postagens
Mostrando postagens com marcador NASA breaking news. Mostrar todas as postagens

segunda-feira, 20 de julho de 2015

NASA's Three-Billion-Mile Journey to Pluto Reaches Historic Encounter

 

Pluto

 

New Horizons Pluto Flyby

Members of the New Horizons science team react to seeing the spacecraft's last and sharpest image of Pluto before closest approach later in the day, Tuesday, July 14, 2015 at the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland.

Credits: NASA/Bill Ingalls

 

“The exploration of Pluto and its moons by New Horizons represents the capstone event to 50 years of planetary exploration by NASA and the United States," said NASA Administrator Charles Bolden. “Once again we have achieved a historic first. The United States is the first nation to reach Pluto, and with this mission has completed the initial survey of our solar system, a remarkable accomplishment that no other nation can match.”

Per the plan, the spacecraft currently is in data-gathering mode and not in contact with flight controllers at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Scientists are waiting to find out whether New Horizons “phones home,” transmitting to Earth a series of status updates that indicate the spacecraft survived the flyby and is in good health. The “call” is expected shortly after 9 p.m. EDT tonight.

The Pluto story began only a generation ago when young Clyde Tombaugh was tasked to look for Planet X, theorized to exist beyond the orbit of Neptune. He discovered a faint point of light that we now see as a complex and fascinating world.

"Pluto was discovered just 85 years ago by a farmer's son from Kansas, inspired by a visionary from Boston, using a telescope in Flagstaff, Arizona,” said John Grunsfeld, associate administrator for NASA's Science Mission Directorate in Washington. "Today, science takes a great leap observing the Pluto system up close and flying into a new frontier that will help us better understand the origins of the solar system.”

New Horizons’ flyby of the dwarf planet and its five known moons is providing an up-close introduction to the solar system's Kuiper Belt, an outer region populated by icy objects ranging in size from boulders to dwarf planets. Kuiper Belt objects, such as Pluto, preserve evidence about the early formation of the solar system.

New Horizons principal investigator Alan Stern of the Southwest Research Institute (SwRI) in Boulder, Colorado, says the mission now is writing the textbook on Pluto.

"The New Horizons team is proud to have accomplished the first exploration of the Pluto system,” Stern said. “This mission has inspired people across the world with the excitement of exploration and what humankind can achieve.”

New Horizons’ almost 10-year, three-billion-mile journey to closest approach at Pluto took about one minute less than predicted when the craft was launched in January 2006. The spacecraft threaded the needle through a 36-by-57 mile (60 by 90 kilometers) window in space -- the equivalent of a commercial airliner arriving no more off target than the width of a tennis ball.

Because New Horizons is the fastest spacecraft ever launched – hurtling through the Pluto system at more than 30,000 mph, a collision with a particle as small as a grain of rice could incapacitate the spacecraft. Once it reestablishes contact Tuesday night, it will take 16 months for New Horizons to send its cache of data – 10 years’ worth -- back to Earth.

New Horizons is the latest in a long line of scientific accomplishments at NASA, including multiple rovers exploring the surface of Mars, the Cassini spacecraft that has revolutionized our understanding of Saturn and the Hubble Space Telescope, which recently celebrated its 25th anniversary. All of this scientific research and discovery is helping to inform the agency’s plan to send American astronauts to Mars in the 2030’s.

“After nearly 15 years of planning, building, and flying the New Horizons spacecraft across the solar system, we’ve reached our goal,” said project manager Glen Fountain at APL. “The bounty of what we’ve collected is about to unfold.”

APL designed, built and operates the New Horizons spacecraft and manages the mission for NASA’s Science Mission Directorate. SwRI leads the mission, science team, payload operations and encounter science planning. New Horizons is part of NASA’s New Frontiers Program, managed by the agency’s Marshall Space Flight Center in Huntsville, Alabama.

Follow the New Horizons mission on Twitter and use the hashtag #PlutoFlyby to join the conversation. Live updates also will be available on the mission Facebook page.

For more information on the New Horizons mission, including fact sheets, schedules, video and images, visit:

http://www.nasa.gov/newhorizons

and

http://solarsystem.nasa.gov/planets/plutotoolkit.cfm

quarta-feira, 15 de julho de 2015

From Mountains to Moons: Multiple Discoveries from NASA’s New Horizons Pluto Mission

 

Pluto

 

New close-up images of a region near Pluto’s equator reveal a giant surprise -- a range of youthful mountains rising as high as 11,000 feet (3,500 meters) above the surface of the icy body.

Credits: NASA/JHU APL/SwRI

Icy mountains on Pluto and a new, crisp view of its largest moon, Charon, are among the several discoveries announced Wednesday by NASA's New Horizons team, just one day after the spacecraft’s first ever Pluto flyby.

"Pluto New Horizons is a true mission of exploration showing us why basic scientific research is so important," said John Grunsfeld, associate administrator for NASA's Science Mission Directorate in Washington. "The mission has had nine years to build expectations about what we would see during closest approach to Pluto and Charon. Today, we get the first sampling of the scientific treasure collected during those critical moments, and I can tell you it dramatically surpasses those high expectations."

“Home run!” said Alan Stern, principal investigator for New Horizons at the Southwest Research Institute (SwRI) in Boulder, Colorado. “New Horizons is returning amazing results already. The data look absolutely gorgeous, and Pluto and Charon are just mind blowing."

A new close-up image of an equatorial region near the base of Pluto’s bright heart-shaped feature shows a mountain range with peaks jutting as high as 11,000 feet (3,500 meters) above the surface of the icy body.

The mountains on Pluto likely formed no more than 100 million years ago -- mere youngsters in a 4.56-billion-year-old solar system. This suggests the close-up region, which covers about one percent of Pluto’s surface, may still be geologically active today.

“This is one of the youngest surfaces we’ve ever seen in the solar system,” said Jeff Moore of the New Horizons Geology, Geophysics and Imaging Team (GGI) at NASA’s Ames Research Center in Moffett Field, California.  

Unlike the icy moons of giant planets, Pluto cannot be heated by gravitational interactions with a much larger planetary body. Some other process must be generating the mountainous landscape.

“This may cause us to rethink what powers geological activity on many other icy worlds,” says GGI deputy team leader John Spencer at SwRI.

The new view of Charon reveals a youthful and varied terrain. Scientists are surprised by the apparent lack of craters. A swath of cliffs and troughs stretching about 600 miles (1,000 kilometers) suggests widespread fracturing of Charon’s crust, likely the result of internal geological processes. The image also shows a canyon estimated to be 4 to 6 miles (7 to 9 kilometers) deep. In Charon’s north polar region, the dark surface markings have a diffuse boundary, suggesting a thin deposit or stain on the surface.

New Horizons also observed the smaller members of the Pluto system, which includes four other moons: Nix, Hydra, Styx and Kerberos. A new sneak-peak image of Hydra is the first to reveal its apparent irregular shape and its size, estimated to be about 27 by 20 miles (43 by 33 kilometers).

The observations also indicate Hydra's surface is probably coated with water ice. Future images will reveal more clues about the formation of this and the other moon billions of years ago. Spectroscopic data from New Horizons’ Ralph instruments reveal an abundance of methane ice, but with striking differences among regions across the frozen surface of Pluto. 

The Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland designed, built and operates the New Horizons spacecraft and manages the mission for NASA’s Science Mission Directorate. SwRI leads the mission, science team, payload operations and encounter science planning. New Horizons is part of NASA’s New Frontiers Program, managed by the agency’s Marshall Space Flight Center in Huntsville, Alabama.

Follow the New Horizons mission on Twitter and use the hashtag #PlutoFlyby to join the conversation. Live updates also will be available on the mission Facebook page.

For more information on the New Horizons mission, including fact sheets, schedules, video and all the new images, visit:

http://www.nasa.gov/newhorizons

and

http://solarsystem.nasa.gov/planets/plutotoolkit.cfm

quarta-feira, 25 de fevereiro de 2015

NASA will pay you $18,000 to stay in bed for 70 straight days

January 29, 2015

By Robin Hoffman

Usually at some point in the day (and for some of us, multiple points) many of us find ourselves wishing we could abandon our responsibilities to return back to our beds to live out the rest of the day under a quiet refuge of blankets. Despite the guilt of chronic laziness, a day in bed sounds pretty darn relaxing—if only we could financially support ourselves by doing so.

Turns out, NASA might have the answer we’re all looking for—although it might require a little more relaxation than originally imagined. NASA is currently looking for volunteers to participate in their “Bed Rest Studies”, in which participants will have to spend 70 straight days in bed, receiving $18,000 for the period of aggressive bodily atrophy. Participants are allowed to read books, Skype, play games, as well as use their phones and computers throughout the duration of the study. Pretty much anything is fair game, so long as you remain in bed, earning a cool $1,200 per week.

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So what are the exact purposes of these studies?

SEE ALSO: NASA has begun planning the first manned mission to Mars

The experiments are designed to find ways of preserving astronauts’ health and safety during periods of extended space travel. “Head down” bed rest is a good way of simulating travel through zero gravity space. Think about it, zero gravity means zero weight or strain on your muscles. It’s a more accessible way of analyzing the bodily changes that occur during space travel.

This study is designed to achieve three core tasks:

1) Understanding how one’s changing physiology in space may affect the process of certain missions.

2) Understanding the impact of one’s physiological state on their ability to perform in particular tasks.

3) Preparing countermeasures to combat any impairment that these physiological conditions may impose.

Within the experiment there are two study groups: exercising and non-exercising. While the exercising group will be subject to exercise training (on special equipment to maintain the laying down position), the non-exercising group will remain completely at ease.

The entire duration of the study actually lasts between 97 and 105 days, depending on whether you’re a non-exercising or an exercising subject, respectively.

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For the first 13 days for non-exercising subjects and 21 days for exercising subjects, you’re able to move freely (in and out of bed) within the bed rest facility. However, after this period you will be prohibited from leaving the bed for the next 70 days, aside from a few specified tests, where you must lay with your head back and feet up. Throughout the entire duration of the study, you will be subject to bone, muscle and heart tests, as well as tests of your circulatory and nervous systems, your nutritional condition, and your body’s capacity to fight off infections.

So is it worth it?

Although spending two months in bed would realistically be excruciating, at least you can rest easily knowing you’re making the sacrifice of grueling laziness for the purpose of furthering human space exploration. This is the only time you could claim to have helped send the first astronauts to Mars by doing absolutely nothing but sitting on your ass.

 

quinta-feira, 15 de janeiro de 2015

Astronaut Twins Available for Interviews about Yearlong Space Station Mission, Health Study

 

January 14, 2015

MEDIA ADVISORY M15-009

NASA astronaut Scott Kelly and his twin, former astronaut Mark Kelly

NASA astronaut Scott Kelly and his twin, former astronaut Mark Kelly, are pictured in the check-out facility at Ellington Field near NASA's Johnson Space Center in Houston on May 6, 2008.

Image Credit:

NASA/JSC

NASA will host an opportunity for media to conduct in-person interviews with astronaut Scott Kelly and his twin brother, former astronaut Mark Kelly, Monday, Jan. 19.

The twins will be available for in-person interviews from 5:30 to 6:30 p.m. EST at NASA’s Johnson Space Center in Houston. The opportunity previously had been planned for Tuesday, Jan. 20, but was changed due to a scheduling conflict.

Scott and his Russian colleague, cosmonaut Mikhail Kornienko, embark March 27 on the first-ever yearlong mission to the International Space Station. Mark, who flew four space shuttle missions and commanded the final flight of space shuttle Endeavour, will participate in biomedical studies on the ground while his twin is aboard the orbiting laboratory.

The valuable scientific data collected will provide insight into how the human body responds to longer durations in space, supporting the next generation of space exploration. In addition to a full suite of investigations to be conducted during the mission, scientists plan to compare medical data from the twins to better understand the results gleaned from Scott’s extended mission.

To participate in the interviews, reporters must contact Nicole Cloutier-Lemasters at 281-483-5111 or nicole.cloutier-1@nasa.gov no later than 4 p.m. Thursday, Jan. 15.

More information about the International Space Station and its crews is available at:

http://www.nasa.gov/station

Scott Kelly is sharing his mission preparation and journey to space on Twitter at:

http://www.twitter.com/StationCDRKelly

For Scott Kelly's full biography, visit:

http://www.jsc.nasa.gov/Bios/htmlbios/kellysj.html

For Mark Kelly’s full NASA biography, visit:

http://www.jsc.nasa.gov/Bios/htmlbios/kellyme.html

 

quarta-feira, 14 de janeiro de 2015

NASA, NOAA to Announce 2014 Global Temperature, Climate Conditions

 

January 14, 2015

MEDIA ADVISORY M15-008

Climate experts from NASA and the National Oceanic and Atmospheric Administration (NOAA) will announce the release of new data on 2014 global temperatures during a media teleconference at 11 a.m. EST Friday, Jan. 16.

The scientists also will discuss 2014's most important weather and climate events. NASA and NOAA are two keepers of the world's temperature data and independently produce a record of Earth's surface temperatures, and changes based on historical observations over oceans and land.

The 2014 global temperature analyses will be issued in a news release 30 minutes before the start of the teleconference.

The teleconference panelists are:

  • Michael Freilich, director of the Earth Science Division in NASA’s Science Mission Directorate, Headquarters, Washington
  • Richard W. Spinrad, chief scientist with NOAA in Washington
  • Gavin Schmidt, director of NASA's Goddard Institute for Space Studies in New York
  • Thomas R. Karl, director of NOAA's National Climatic Data Center in Asheville, North Carolina, and chair of the Subcommittee on Global Change Research for the U.S. Global Change Research Program in Washington

Media can participate in the teleconference by calling 800-593-7128 (toll-free in the United States and Canada) or 212-547-0144 (international) and use the passcode "globe."

Audio of the briefing, as well as supporting graphics, will stream live at:

http://www.nasa.gov/newsaudio

For more information about NASA's Earth science programs, visit:

http://www.nasa.gov/earthrightnow