ICESat-II, ELaNa-XVIII: ELFIN, IT-SPINS, CHEFsat - Delta II 7420-10C - Vandenberg SLC-2W -15.09.2018

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https://www.nasa.gov/press-release/nasa-to-host-media-briefing-on-new-ice-monitoring-mission
ЦитироватьAug. 17, 2018
MEDIA ADVISORY M18-122

NASA to Host Media Briefing on New Ice-Monitoring Mission


NASA's ICESat-2 spacecraft undergoing final testing at Vandenberg Air Force Base in California in preparation for launch on Sept. 15.
Credits: USAF 30th Space Wing/Timonthy Trenkle

NASA will host a media teleconference at 1 p.m. EDT Wednesday, Aug. 22, to discuss the upcoming launch of the Ice, Cloud and land Elevation Satellite (ICESat-2), which will fly NASA's most advanced laser altimeter to measure Earth's changing ice. The teleconference will stream live on NASA's website.

ICESat-2 is scheduled to launch Sept. 15 on a mission to provide critical, precision measurements of Earth's ice sheets, glaciers and sea ice, which will help scientists better understand how changes at the poles will affect people around the world.

The briefing participants are:
    [/li]
  • Tom Wagner, cryosphere program scientist in the Science Mission Directorate (SMD) at NASA Headquarters
  • Richard Slonaker, ICESat-2 program executive in SMD
  • Doug McLennan, ICESat-2 project manager at NASA's Goddard Space Flight Center
  • Donya Douglas-Bradshaw, Advanced Topographic Laser Altimeter System (ATLAS) instrument manager at Goddard
  • Tom Neumann, ICESat-2 deputy project scientist at Goddard
At the time of the briefing, associated graphics will be available online at: 

...
The teleconference will be followed at 2:30 p.m. by a live, televised discussion with social media followers and mission experts at Goddard, which manages the ICESat-2 mission for SMD. It will be carried on NASA Television, the agency's website and NASA's Facebook Live, Periscope, Twitter, Twitch, YouTube, and UStream channels. Members of the public can ask questions with the hashtag #askNASA on Twitter or in the comment section of the NASA Ice Facebook page.

ICESat-2 will launch from Vandenberg Air Force Base in California aboard United Launch Alliance's final Delta II rocket. For more information on the mission, visit:

Last Updated: Aug. 17, 2018
Editor: Sean Potter

tnt22

https://svs.gsfc.nasa.gov/13044
ЦитироватьICESat-2 L-30 Science Briefing Graphics
Released on August 22, 2018

https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013044/icesat2_orbit_short_720p30.mp4 (1:24)
Download
ICESat-2 will complete all 1,387 of its orbits every 91 days.
Спойлер
https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013044/ICESat2__deploy_beauty_ipod_lg.m4v (0:53)
Download
Animation showing deployment of the ICESat-2 spacecraft and the laser turning on.

https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013044/Build.mp4 (0:47)
Download
Footage of the Advanced Topographic Laser Altimeter System (ATLAS) under construction at NASA's Goddard Space Flight Center.

https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013044/TVAC.mp4 (0:28 )
Download
Footage of the ATLAS instrument entering the Thermal Vacuum Chamber at NASA Goddard.

https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013044/Laser.mp4 (0:26)
Download
Animation showing the ATLAS laser firing and how its six beams will cover ground tracks across Earth's surface.

https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013044/SEA_ICE_V06_1.mp4 (0:49)
Download
Animation showing how ICESat-2 will measure the height of sea ice freeboard (hf) – the portion of sea ice floating above the water – to estimate sea ice thickness (hi).

https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013044/Rink.mp4 (1:03)
Download
This data visualization shows swaths of ice elevation data gathered over the Rink Glacier in Greenland by NASA's Airborne Topographic Mapper, an airborne lidar flown over Greenland regularly since 1993 and on NASA's Operation IceBridge since 2009. The end of the animation compares the scale of the airborne data to the global coverage ICESat-2 will provide.

https://svs.gsfc.nasa.gov/vis/a010000/a013000/a013044/Tom_orbit.mp4 (0:37)
Download
Animation showing how ICESat-2's orbit tracks converge at latitudes of 88 N and 88 S around the North and South poles, providing dense data coverage at those locations.
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ЦитироватьICESat-2 Adds the Third Dimension to Earth
Доступ по ссылке

NASA Goddard

Дата загрузки: 21 авг. 2018 г.

ICESat-2 will provide scientists with height measurements that create a global portrait of Earth's third dimension, gathering data that can precisely track changes of terrain including glaciers, sea ice, forests and more. The single instrument on ICESat-2 is ATLAS, the Advanced Topographic Laser Altimeter System, will measure melting ice sheets and investigate how this effects sea level rise, investigate changes in the mass of ice sheets and glaciers, estimate and study sea ice thickness, and measure the height of vegetation in forests and other ecosystems worldwide. "Eternal Circle," Laurent Dury, Koka Media SACEM Complete transcript available.
https://www.youtube.com/watch?v=rOXjuiQ3R_ohttps://www.youtube.com/watch?v=rOXjuiQ3R_o (0:55)

tnt22

https://www.nasa.gov/press-release/nasa-launching-advanced-laser-to-measure-earth-s-changing-ice
ЦитироватьAug. 22, 2018
RELEASE 18-074

NASA Launching Advanced Laser to Measure Earth's Changing Ice


NASA's Ice, Cloud and land Elevation Satellite-2 (ICESat-2) spacecraft arrives at the Astrotech Space Operations facility at Vandenberg Air Force Base in California ahead of its scheduled launch on Sept. 15, 2018.
Credits: U.S. Air Force/Vanessa Valentine

Next month, NASA will launch into space the most advanced laser instrument of its kind, beginning a mission to measure – in unprecedented detail – changes in the heights of Earth's polar ice.

NASA's Ice, Cloud and land Elevation Satellite-2 (ICESat-2) will measure the average annual elevation change of land ice covering Greenland and Antarctica to within the width of a pencil, capturing 60,000 measurements every second.

"The new observational technologies of ICESat-2 – a top recommendation of the scientific community in NASA's first Earth science decadal survey – will advance our knowledge of how the ice sheets of Greenland and Antarctica contribute to sea level rise," said Michael Freilich, director of the Earth Science Division in NASA's Science Mission Directorate.

ICESat-2 will extend and improve upon NASA's 15-year record of monitoring the change in polar ice heights, which started in 2003 with the first ICESat mission and continued in 2009 with NASA's Operation IceBridge, an airborne research campaign that kept track of the accelerating rate of change.
Спойлер

NASA's Ice, Cloud and land Elevation Satellite-2 (ICESat-2) will measure height with a laser instrument that features components designed to provide precise data.
Credits: NASA/Adriana Manrique Gutierrez

A Technological Leap

ICESat-2 represents a major technological leap in our ability to measure changes in ice height. Its Advanced Topographic Laser Altimeter System (ATLAS) measures height by timing how long it takes individual light photons to travel from the spacecraft to Earth and back.

"ATLAS required us to develop new technologies to get the measurements needed by scientists to advance the research," said Doug McLennan, ICESat-2 project manager at NASA's Goddard Space Flight Center. "That meant we had to engineer a satellite instrument that not only will collect incredibly precise data, but also will collect more than 250 times as many height measurements as its predecessor."

ATLAS will fire 10,000 times each second, sending hundreds of trillions of photons to the ground in six beams of green light. The roundtrip of individual laser photons from ICESat-2 to Earth's surface and back is timed to the billionth of a second to precisely measure elevation.

With so many photons returning from multiple beams, ICESat-2 will get a much more detailed view of the ice surface than its predecessor, ICESat. In fact, if the two satellites were flown over a football field, ICESat would take only two measurements – one in each end zone – whereas ICESat-2 would collect 130 measurements between each end zone.

As it circles Earth from pole to pole, ICESat-2 will measure ice heights along the same path in the polar regions four times a year, providing seasonal and annual monitoring of ice elevation changes.

https://www.youtube.com/watch?v=rOXjuiQ3R_o
NASA's Ice, Cloud and land Elevation Satellite-2 (ICESat-2) will provide scientists with height measurements that create a global portrait of Earth's third dimension, gathering data that can precisely track changes of terrain including glaciers, sea ice, and forests.
Credits: NASA/Ryan Fitzgibbons
Watch this video on YouTube.

Tracking Ice Melt

Hundreds of billions of tons of land ice melt or flow into the oceans annually, contributing to sea level rise worldwide. In recent years, contributions of melt from the ice sheets of Greenland and Antarctica alone have raised global sea level by more than a millimeter a year, accounting for approximately one-third of observed sea level rise, and the rate is increasing.

ICESat-2 data documenting the ongoing height change of ice sheets will help researchers narrow the range of uncertainty in forecasts of future sea level rise and connect those changes to climate drivers.

ICESat-2 also will make the most precise polar-wide measurements to date of sea ice freeboard, which is the height of sea ice above the adjacent sea surface. This measurement is used to determine the thickness and volume of sea ice. Satellites routinely measure the area covered by sea ice and have observed an Arctic sea ice area decline of about 40 percent since 1980, but precise, region-wide sea ice thickness measurements will improve our understanding of the drivers of sea ice retreat and loss.

Although floating sea ice doesn't change sea level when it melts, its loss has different consequences. The bright Arctic ice cap reflects the Sun's heat back into space. When that ice melts away, the dark water below absorbs that heat. This alters wind and ocean circulation patterns, potentially affecting Earth's global weather and climate.

Beyond the poles, ICESat-2 will measure the height of ocean and land surfaces, including forests. ATLAS is designed to measure both the tops of trees and the ground below, which – combined with existing datasets on forest extent – will help researchers estimate the amount of carbon stored in the world's forests. Researchers also will investigate the height data collected on ocean waves, reservoir levels, and urban areas.

Potential data users have been working with ICESat-2 scientists to connect the mission science to societal needs. For example, ICESat-2 measurements of snow and river heights could help local governments plan for floods and droughts. Forest height maps, showing tree density and structure, could improve computer models that firefighters use to forecast wildfire behavior. Sea ice thickness measurements could be integrated into forecasts the U.S. Navy issues for navigation and sea ice conditions.

"Because ICESat-2 will provide measurements of unprecedented precision with global coverage, it will yield not only new insight into the polar regions, but also unanticipated findings across the globe," said Thorsten Markus, an ICESat-2 project scientist at Goddard. "The capacity and opportunity for true exploration is immense."
[свернуть]
​ICESat-2 is scheduled to launch Sept. 15 from Vandenberg Air Force Base in California.

Last Updated: Aug. 22, 2018
Editor: Karen Northon









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tnt22

https://spaceflightnow.com/2018/08/28/installation-of-ice-measuring-satellite-caps-assembly-of-last-delta-2-rocket/
ЦитироватьInstallation of ice-measuring satellite caps assembly of last Delta 2 rocket
August 28, 2018 | Stephen Clark


Technicians open and inspect the flight door to ICESat 2's laser instrument shortly after the spacecraft arrived at Vandenberg Air Force Base, California, in June. Credit: USAF 30th Space Wing/Timothy Trenkle

NASA's ICESat 2 satellite has been bolted atop a United Launch Alliance Delta 2 rocket at Vandenberg Air Force Base in California as ground teams prepare for the workhorse launcher's final liftoff Sept. 15.

Equipped with a six-beam laser altimeter, the spacecraft will monitor changes in Earth's land and sea ice, continuing a series of measurements which have shown ice is melting around the edges of Greenland and Antarctica, and is thinning in the oceans.

ICESat 2 — short for Ice, Cloud and land Elevation Satellite 2 — was raised atop the Delta 2 rocket early Sunday at Vandenberg after a short road trip inside a shipping container fr om a nearby Astrotech satellite processing facility. A crane hoisted the spacecraft — about the size of a small camper trailer — into the mobile gantry at Vandenberg's Space Launch Complex 2-West, the Delta 2's West Coast launch pad.

Ground crews lowered the spacecraft atop the Delta 2's second stage, then began preparations to install the rocket's clamshell-like payload fairing around the satellite, the final step in assembly of the 128-foot-tall (39-meter) launch vehicle.

The spacecraft's transfer to the launch pad occurred two days later than planned to resolve an issue with a piece of ground support equipment, but the the schedule hiccup is not expected to delay the launch.

Liftoff is scheduled for Sept. 15 at 5:46 a.m. PDT (8:46 a.m. EDT; 1246 GMT) on the 155th and final flight of ULA's venerable Delta 2 rocket.

Heading south from Vandenberg, the Delta 2 will shed its four solid rocket boosters and kerosene-fueled first stage. Two firings of the Delta 2's second stage engine will maneuver the ICESat 2 satellite into an orbit around 300 miles (500 kilometers).

Separation of ICESat 2 from the Delta 2 rocket is expected nearly 53 minutes after liftoff, followed by a third burn of the Delta 2 upper stage engine to set up for deployment of four tiny CubeSats developed by students at UCLA, Cal Poly and the University of Central Florida.

A fourth burn by the Delta 2's second stage engine will de-orbit the rocket for a fiery, destructive re-entry to avoid creating space junk.

The launch next month will mark the retirement of the Delta 2 rocket after a storied record of missions since its debut in 1989. Delta 2 rockets have launched NASA probes to the moon, Mars, Mercury, comets and asteroids, plus all of the U.S. Air Force's Global Positioning System navigation satellites in the 1990s and 2000s.
Спойлер

The Delta 2 rocket set to launch NASA's ICESat 2 satellite is pictured on its launch pad in June. Credit: NASA/Randy Beaudoin

The ICESat 2 satellite was built by Northrop Grumman Innovation Systems, and its single instrument — the Advanced Topographic Laser Altimeter System, or ATLAS — was developed at NASA's Goddard Space Flight Center.

The ATLAS laser will split into six beams once it leaves the instrument. ICESat 2 will measure the time it takes for the laser beams to bounce off of Earth's surface and return to the satellite, giving scientists information about the height of ice sheets and forest canopies.

"ATLAS essentially acts like a stop watch," said Donya Douglas-Bradshaw, ATLAS instrument manager at Goddard. "The ATLAS laser fires 10,000 pulses per second with a trillion photons in each shot. Each time the laser fires, it starts the stop watch. It takes about 3.3 milliseconds for the beam to exit the instrument, reach the surface and return back to the telescope."

The laser package "has the ability to time tag a single photon to billionth of a second accuracy," Douglas-Bradshaw said in a briefing with reporters last week. "This precision allows the instrument to detect annual changes in ice elevation on the order of half of a centimeter (0.2 inches)."

The ICESat 2 satellite weighs around 3,340 pounds (1,515 kilograms) at launch, according to Doug McLennan, ICESat 2's project manager at Goddard.

McLennan said the spacecraft has enough fuel to operate more than 10 years. ICESat 2's primary mission is scheduled for three years, but could be extended.

ICESat 2 is a more advanced replacement for NASA's ICESat satellite, which measured ice coverage and thickness from 2003 through 2009. ICESat carried a laser producing a single beam, while ICESat 2's upgraded laser instrument will generate six beams to better see wh ere ice is melting and flowing, helping quantify and identify the impacts of warming global temperatures.

The ICESat 2 mission is expected to cost NASA more than $1.05 billion, including expenditures during design, development, launch and operations of the satellite.

NASA mounted airborne ice research campaigns since ICESat's laser instrument failed in 2009, continuing observations of certain ice flows to bridge the gap between ICESat and the launch of ICESat 2. But global coverage will only resume with the launch and commissioning of the new satellite.

"Since the end of the first ICESat mission, NASA has not had the ability to measure ice sheet surface elevation and sea ice thickness on a global scale," Richard Slonaker, ICESat 2 program executive at NASA Headquarters. "That all changes with the launch of ICESat 2."

"What we are hopeful for is that we are going to be able to tie changes in the land ice and sea ice to other specific changes in the Earth system," said Tom Wagner, cryosphere program scientist at NASA Headquarters.

"Ultimately, what we're trying to understand are the processes and the climate drivers that are guiding this change," Wagner said.
[свернуть]

tnt22

https://www.nasa.gov/feature/goddard/2018/counting-on-nasas-icesat-2
ЦитироватьAug. 28, 2018

Counting on NASA's ICESat-2

NASA is about to launch the agency's most advanced laser instrument of its kind into space. The Ice, Cloud and land Elevation Satellite-2, or ICESat-2, will provide critical observations of how ice sheets, glaciers and sea ice are changing, leading to insights into how those changes impact people where they live.

Launch is scheduled for Sept. 15, and as we count down the days, we're counting up 10 things you should know about ICESat-2:
Спойлер

The ICESat-2 satellite undergoes tests one last time before it is placed in the rocket. ICESat-2, scheduled to launch Sept. 15, will precisely measure the height of Earth's ice and monitor change.
Credits: USAF 30th Space Wing/Timothy Trenkle

Space Laser

There's only one scientific instrument on ICESat-2, but it is a marvel. The Advanced Topographic Laser Altimeter System, or ATLAS, measures height by precisely timing how long it takes individual photons of light fr om a laser to leave the satellite, bounce off Earth, and return to the satellite. Hundreds of people at NASA's Goddard Space Flight Center in Greenbelt, Maryland, worked to build this smart-car-sized instrument to exacting requirements so that scientists can measure minute changes in our planet's ice.

Types of Ice

Not all ice is the same. Land ice, like the ice sheets in Greenland and Antarctica, or glaciers dotting the Himalaya, builds up as snow falls over centuries and forms compacted layers. When it melts, it can flow into the ocean and raise sea level. Sea ice, on the other hand, forms when ocean water freezes. It can last for years, or a single winter. When sea ice disappears, there is no effect on sea level (think of a melting ice cube in your drink), but it can change climate and weather patterns far beyond the poles.

3-Dimensional Earth

ICESat-2 will measure elevation to see how much glaciers, sea ice and ice sheets are rising or falling. NASA's fleet of satellites collect detailed images of our planet that show the changing extent of features like ice sheets and forests, and with ICESat-2's data, scientists can add the third dimension – height – to those portraits of Earth.

4 Seasons, 4 Measurements

ICESat-2's orbit will make 1,387 unique ground tracks around Earth in 91 days – and then start the same ground pattern again at the beginning. This allows the mission to measure the same ground tracks four times a year and scientists to see how glaciers and other frozen features change with the seasons – including over winter.

532 Nanometer Wavelength

https://www.youtube.com/watch?v=agmmr5XvgMM
(video 0:35)
The lasers on ATLAS, ICESat-2's instrument, shine at a wavelength of 532 nanometers – a bright green on the visible spectrum.
Credits: NASA's Goddard Space Flight Center/Ryan Fitzgibbons
Download this video in HD formats from NASA Goddard's Scientific Visualization Studio

The ATLAS instrument will measure ice with a laser that shines at 532 nanometers – a bright green on the visible spectrum. When these laser photons return to the satellite, they pass through a series of filters that block any light that's not exactly at this wavelength. This helps the instrument from being swamped with all the other shades of sunlight naturally reflected from Earth.

Laser Beams

While the first ICESat satellite (2003-2009) measured ice with a single laser beam, ICESat-2 splits its laser light into six beams – the better to cover more ground (or ice). The arrangement of the beams into three pairs will also allow scientists to assess the slope of the surface they're measuring.

Kilometers per Second

ICESat-2 will zoom above the planet at 7 km per second (4.3 miles per second), completing an orbit around Earth in 90 minutes. The orbits have been set to converge at the 88-degree latitude lines around the poles, to focus the data coverage in the region wh ere scientists expect to see the most change.

800-Picosecond Precision

All of those height measurements result from timing the individual laser photons on their 600-mile roundtrip between the satellite and Earth's surface – a journey that is timed to within 800 picoseconds. That's a precision of less than a billionth of a second. NASA engineers had to custom build a stopwatch-like device, since no existing timers fit the strict requirements.

Years of Operation IceBridge


Icy Bay, in the Wrangell-Saint Elias Wilderness, as seen from an Operation IceBridge flight in August 2018. Operation IceBridge flights have measured changing ice in the Arctic and Antarctic since 2009.
Credits: NASA

As ICESat-2 measures the poles, it adds to NASA's record of ice heights that started with the first ICESat and continued with Operation IceBridge, an airborne mission that has been flying over the Arctic and Antarctic for nine years. The campaign, which bridges the gap between the two satellite missions, has flown since 2009, taking height measurements and documenting the changing ice.

10,000 pulses a second

ICESat-2's laser will fire 10,000 times in one second. The original ICESat fired 40 times a second. More pulses mean more height data. If ICESat-2 flew over a football field, it would take 130 measurements between end zones; its predecessor, on the other hand, would have taken one measurement in each end zone.

ICESat-2's fast-firing laser, combined with the instrument's timing precision, sensitive photon-detection technology and other features will allow the ICESat-2 mission to measure the average annual change in vast ice sheets down to the width of a pencil.

By: Kate Ramsayer
NASA's Goddard Space Flight Center, Greenbelt, Md.
[свернуть]
Last Updated: Aug. 28, 2018
Editor: Sara Blumberg

tnt22

ЦитироватьThe GLOBE Program‏Подлинная учетная запись @GLOBEProgram 2 ч. назад

Get ready to #DoScience! The "Trees Around the GLOBE" student research campaign will launch with NASA #ICESat2 satellite on 15 September. This campaign will create a community to compare your observations to @NASA_ICE #SatelliteData


tnt22

https://www.nasa.gov/press-release/icesat-2-launch-briefings-and-events-from-california
ЦитироватьSept. 4, 2018
MEDIA ADVISORY M18-015

ICESat-2 Launch Briefings and Events from California


An artist illustration of NASA's ICESat-2 satellite above Earth. Image credit: NASA/Goddard Space Flight Center

NASA's Ice, Cloud and land Elevation Satellite-2, or ICESat-2, a mission to measure the changing height of Earth's ice, is scheduled to launch Saturday, Sept. 15, with a 40-minute window opening at 8:46 a.m. EDT (5:46 a.m. PDT). The spacecraft will lift off from Space Launch Complex 2 (SLC-2) at Vandenberg Air Force Base in California on the final launch of a United Launch Alliance Delta II rocket. The deadline for media to apply for accreditation for this launch has passed.

Launch coverage will begin on NASA Television and the agency's website at 8:10 a.m. EDT (5:10 a.m. PDT).

ICESat-2 will measure the height of our changing Earth, one laser pulse at a time, 10,000 laser pulses per second. The satellite will carry a single instrument, the Advanced Topographic Laser Altimeter System (ATLAS), which measures the travel times of laser pulses to calculate the distance between the spacecraft and Earth's surface. ICESat-2 will provide scientists with height measurements that create a global portrait of Earth's third dimension, gathering data that can precisely track changes of terrain, including glaciers, sea ice and forests.

NASA's Goddard Space Flight Center in Greenbelt, Maryland, manages development of the ICESat-2 mission, including mission systems engineering and mission operations on behalf of the agency's Science Mission directorate. Goddard also built and tested the ATLAS instrument. The ICESat-2 spacecraft was built and tested by Northrop Grumman in Gilbert, Arizona. United Launch Alliance of Centennial, Colorado, is providing the Delta II launch service. NASA's Launch Services Program, based at Kennedy Space Center in Florida, is responsible for launch service acquisition, integration, analysis and launch management.

The following is a complete schedule of mission coverage, including opportunities for media participation at Vandenberg.

L-2 Day (Thursday, Sept. 13)

Prelaunch Mission Briefing

A prelaunch mission briefing will be held at 4 p.m. EDT (1 p.m. PDT) at NASA Building 836 and will be broadcast live on NASA Television and the agency's website.

Participants:
    [/li]
  • Tom Wagner, ICESat-2 program scientist, NASA Headquarters
  • Doug McLennan, ICESat-2 project manager, NASA Goddard Space Flight Center
  • Donya Douglas-Bradshaw, ATLAS instrument project manager, NASA Goddard Space Flight Center
  • Tom Neumann, ICESat-2 deputy project scientist, NASA Goddard Space Flight Center
  • Lori Magruder, University of Texas at Austin, ICESat-2 science definition team lead
  • Helen Fricker, Scripps Institution of Oceanography, La Jolla, Calif., ICESat-2 science definition team member
  • Bill Barnhart, ICESat-2 program manager, Northrop Grumman
  • Tim Dunn, launch director, NASA Kennedy Space Center
  • Scott Messer, program manager, NASA Programs, United Launch Alliance
  • 1st Lt. Daniel Smith, launch weather officer, 30th Space Wing, Vandenberg Air Force Base
...

L-0 Launch Day (Saturday, Sept. 15)

NASA TV Launch Coverage

NASA TV live launch coverage will begin at 8:10 a.m. EDT (5:10 a.m. PDT). For NASA TV downlink information, schedules and links to streaming video, visit http://www.nasa.gov/ntv.
...

NASA Web Prelaunch and Launch Coverage

Prelaunch and launch day coverage of ICESat-2 will be available on the NASA website. Coverage will include live streaming and blog updates beginning at 8:10 a.m. EDT (5:10 a.m. PDT) as the countdown milestones occur. ... You can follow countdown coverage on our launch blog at https://blogs.nasa.gov/icesat2/.

Last Updated: Sept. 4, 2018
Editor: Linda Herridge

tnt22

ЦитироватьULA‏Подлинная учетная запись @ulalaunch 7 сент.

Heads up! @NASA_LSP @NASA_ICE and @ulalaunch are holding a tweet chat about the #DeltaII #ICESat2 mission. Join us Sept. 10 at 3:30pmET/12:30pmPT. Have a question? Use #AskNASA to get it into the mix.


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ЦитироватьNASA missions study Earth's frozen water: GRACE-FO & ICESat-2

SciNews

Опубликовано: 8 сент. 2018 г.

GRACE-FO and ICESat-2 are the latest NASA missions that help scientists study the cryosphere, Earth's frozen water. The GRACE-FO mission was launched on 22 May 2018 aboard a SpaceX Falcon 9 rocket, while ICESat-2 is scheduled to launch on 15 September 2018.
https://www.youtube.com/watch?v=_vqOraF15aQhttps://www.youtube.com/watch?v=_vqOraF15aQ (4:05)