nasa archives - planet forward - 克罗地亚vs加拿大让球 //www.getitdoneaz.com/tag/nasa/ inspiring stories to 2022年卡塔尔世界杯官网 tue, 07 mar 2023 19:39:26 +0000 en-us hourly 1 https://wordpress.org/?v=6.6.1 strange lake huron sinkholes may be the key to finding life on other planets //www.getitdoneaz.com/story/strange-lake-huron-sinkholes/ wed, 15 feb 2023 16:28:25 +0000 http://dev.planetforward.com/2023/02/15/strange-lake-huron-sinkholes-may-be-the-key-to-finding-life-on-other-planets/ special microbial mat systems in alpena, michigan, are helping scientists search for extraterrestrial life. they could also lead to advances in other scientific fields, such as evolutionary biology and medicine.

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special microbial mat systems in alpena, michigan, are helping scientists search for extraterrestrial life.

“it’s so different, and feels otherworldly,” said stephanie gandulla, a diver with the national oceanic and atmospheric administration’s thunder bay marine sanctuary. she has sampled the mats near the sinkholes on the lake’s bottom.

the floor of lake huron, spotted with small mysterious mounds.
these microbial mats in a lake huron sinkhole have finger-like protrusions caused by a buildup of methane gas in small pockets beneath them. (thunder bay marine sanctuary)

you may have seen a microbial mat before — the green algae on wet rocks at the beach is an example.

algae’s green color comes from chlorophyll — a substance that uses sunlight to turn carbon dioxide into energy. carbon dioxide and oxygen support most of life on earth.

but under special conditions, like those at three sinkholes just two and a half miles east of alpena, primitive forms of microbes called cyanobacteria can survive without either of them.

these are white, not green, and they get energy from chemicals in the water.

“they are everywhere, but they are incredibly hard to find,” said bopaiah biddanda, a biologist with grand valley state university’s annis water resources institute, who has been studying them for 20 years.

such mats are normally found in ocean waters over 32,000 feet deep, but they can be found only 80 feet below the surface of what is known as lake huron’s middle island sinkhole.

the sinkhole’s biologically extreme environment can help simulate sample collection in extraterrestrial worlds where life is based on similar chemicals. a new study by biddanda models scenarios where robots could analyze material beneath the water of other planets. it’s based on the work in lake huron.

the study focuses on two methods: suction devices for soft mats and coring devices for hard mats.

a scuba diver wearing a black wetsuit floats close to the bottom of the alien-looking red-and-white bottom.
researchers use a special drill to carve cylindrical pieces of material out of sinkholes to study life on the lakebed.(nick zachar/noaa)

the sinkholes near alpena provide sulfuric, oxygenless groundwater that creates the conditions needed for the mats to grow. filaments of cyanobacteria drift together, creating a wispy white-purple flow.

“it almost looks like a mirage,” gandulla said.

it could be a long time before the experience from sinkholes in lake huron will be used to explore the potential of life on planets elsewhere, but biddanda’s exploration is yielding other finds now.

recently, for example, his team found an explanation for the mats’ mysterious ability to change colors overnight.

the purple and white cyanobacteria travel upwards to capture energy from the top of the mat, according to the study. during the day, microbes with color capture the small amount of sunlight reaching the seafloor with chlorophyll.

as the sun sets, the white microbes move to the surface of the mat to absorb chemicals in the sulfuric water for their energy. this continuous, vertical shift in microbes causes patches of the mat to change between purple and white in a daily cycle.

the microbial mats thrive off a special soup of chemicals in the groundwater, but changes in land use could disrupt it in the future.

the thunder bay sanctuary is constantly combating such threats to coastal ecosystems such as the one near alpena.

“development might choke off the water supply,” biddanda said.

the marine sanctuary offers educational programs and tours to k-12 students and operates a welcome center year-round.

“we work together to protect it as a community,” gandulla said.

a half-lit sphere of europa, which is a white with a blue tint, and covered in lines showing orange beneath.
scientists hope to sample the oceans of europa, a moon of jupiter, for microbes with robots pioneered in lake huron. (nasa)

the characteristics of middle island sinkhole’s cyanobacteria could hold the key to much more than planetary exploration. they could lead to advances in other scientific fields, such as evolutionary biology and medicine.

“we have a library of pharmaceutical value here,” biddanda said. “this could help us down the road.”

and, he noted that they look cool: “there is something fascinating and mesmerizing about these colorful mats.”

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cop26 in context: grassroots climate change communication, sea ice, and urban inequality //www.getitdoneaz.com/story/grassroots-communication-inequality/ tue, 02 nov 2021 15:11:42 +0000 http://dpetrov.2create.studio/planet/wordpress/cop26-in-context-grassroots-climate-change-communication-sea-ice-and-urban-inequality/ today is day three of cop26, a key climate summit in glasgow attended by delegates from 197 countries. click through to read more about today's themes.

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today is day three of cop26, a key climate summit in glasgow attended by delegates from 197 countries. tuesday’s schedule will cover themes of grassroots climate change communication, sea ice, and urban inequality. want to know more? we’ve got you covered.

check back tomorrow for more info on what is being explored at cop26 — and good reads to keep you informed!

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revolutionary weather satellite to aid in earlier warning of severe storms //www.getitdoneaz.com/story/revolutionary-weather-satellite-to-aid-in-earlier-warning-of-severe-storms/ sun, 20 nov 2016 18:37:34 +0000 http://dpetrov.2create.studio/planet/wordpress/revolutionary-weather-satellite-to-aid-in-earlier-warning-of-severe-storms/ noaa’s revolutionary weather satellite successfully launched saturday from florida. this means earlier warnings, expected to save lives from severe weather situations.

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by kelly calagna

cape canaveral, fla. – noaa’s revolutionary weather satellite successfully launched saturday from the kennedy space center at 6:42 p.m. est. the geostationary operational environmental satellite (goes-r) means earlier warnings, expected to save lives from severe weather situations.

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the goes-r satellite is located in the nose cone of the rocket. (kelly calagna/medill)

goes-r, called goes-16 as soon as it detached from the booster, is the first in a series of next generation satellites for weather monitoring set to replace the current noaa goes network. “it’s going to be like instead of seeing black and white television, hd,” said joe pica, director of the office of operations at the national weather service in a mission briefing at the space center on thursday.

hurricane matthew delayed the weather satellite’s launch twice due to damage to space center facilities and equipment last month, as well as a minor booster issue. but with clear conditions and all units go, the united launch alliance (ula) atlas v rocket finally got the spacecraft off the ground in a noaa and nasa partnership.

the geostationary satellite will be able to monitor a vast swath of the the western hemisphere longitudinally from the east coast of new zealand to the west coast of africa and from latitudinally from canada to chile. with three times more channels than current weather satellites, it will track severe weather with intensified accuracy, giving immediate updates and more reaction time with warnings about hurricanes, typhoons, lightning, wildfires, tornadoes and even rough flight conditions. the imaging resolution will be four times as powerful as what is available now, so advanced that it will be possible to see the waves in the clouds that cause turbulence.

“we will see features with goes-r that we have never been able to see before,” said steven goodman, goes-r program scientist with noaa.

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the launch of goes-r occurred saturday at 6:42 p.m. est at the kennedy space center in cape canaveral, florida. (kelly calagna/medill)

spectral images of earth will occur every five minutes and can be taken up to every 30 seconds in areas of interest, which is five times faster than the capabilities of current satellites. this frequency in information helps agencies such as fema and noaa better plan for evacuations and quickly get grounds crews where they are needed most. “we are excited for goes-r because it is going to help us do our jobs better,” pica said.

the ability to more accurately map lightning aids the organizations in predicting the behavior of a hurricane, technology goodman said would have greatly assisted the caribbean in preparing for the rapid intensification of matthew just last month. goodman also said the use of the imaging could help the people see “that the risk is real and the storm is coming at them, and they will maybe be more likely to take action. and that is what we need, people to take action to be safe.”

additionally, goes-16’s environmental monitoring programs will aid in documenting the effects of climate change on extreme weather. “right now we don’t know what the [normal] variation for extreme weather is,” goodman said. but the 20 years of data goes-16 will be collecting will extend the 17 years of data from the nasa tropical rainfall measuring mission (trmm), creating a sound climate data set “and we can look for those variations,” goodman said.

goes-16 also will be keeping an eye on the sun. its six instruments are designed to be earth-pointing, in situ-pointing (near environment), or solar-pointing. the solar-pointing instruments will be able to detect solar flares, intense radiation blasts from the sun that can impact telecommunications satellites and electric power on earth. when necessary, the satellite can send out warnings to shut off power grids to protect them from being destroyed from electromagnetic disturbances.

it will take goes-16 nine days from its launch date to position itself in its planned orbital route and about five months before it is fully operational. news and updates on the satellite are available at goes-r.gov.

“accuracy turns into time for us, and the one thing you can’t get back during a response to an emergency is time,” said damon penn, assistant administrator of the response directorate at fema, “our relationship with noaa and the kinds of products noaa provides for us are critical to what it is that we do.”

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(from left to right) steven goodman, goes-r program scientist, noaa; joe pica, director of the office of operations at the national weather service; sandra cauffman, deputy director of the earth science division at nasa headquarters; and damon penn, assistant administrator of the response directorate at fema, give a mission briefing at the kennedy space center press office on thursday. (kelly calagna/medill)
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innovation on the launch pad: how media capture a nasa rocket launch //www.getitdoneaz.com/story/innovation-on-the-launch-pad-how-media-capture-a-nasa-rocket-launch/ sun, 20 nov 2016 18:00:45 +0000 http://dpetrov.2create.studio/planet/wordpress/innovation-on-the-launch-pad-how-media-capture-a-nasa-rocket-launch/ there is no “standard equipment” when it comes to protecting a camera from the intense exhaust of a space rocket, so each individual journalist or photographer must macgyver his or her own unique contraption for the job.

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by kelly calagna

kennedy space center – duct tape, bubble wrap, aluminum foil, plastic bags, ground stakes, bungee cords, squares of plywood and plastic storage containers. these are just some of the sophisticated tools adapted by journalists and photographers as they set up their remotely activated cameras at the nov. 19 goes-r weather satellite launch site at the kennedy space center.

there is no “standard equipment” when it comes to protecting a camera from the intense exhaust of a space rocket, so each individual must macgyver his or her own unique contraption for the job — that’s where the storage containers come in.

“you get anything out here from a plastic bag to a homemade box. you can’t go down and buy a box. you make it,” said julian leek, a freelance photographer who has been shooting nasa launches since apollo 7 in 1968.

these launch camera contraptions are the products of a unique need met by individual ingenuity. each is a work of art, and like snowflakes, no two are the same. those that survived and successfully triggered during saturday’s launch captured stunning images of the most advanced weather satellite’s last moments on earth.

most launch camera setups involve a box of sorts made of plastic or aluminum that house a camera and a remote device, which activates the shutter by either sound or a timer.

to prevent cameras from blowing away in the blast, they are either staked into the ground, or taped or cable tied to fixed objects; such as these attached to a metal figure near the pad. (kelly calagna/medill)

the box is then placed atop a tripod that is either staked into the ground or otherwise attached to surrounding anchors, like nearby rail ties or stationary structures close to the launch pad. the goal is for their cameras to survive the rocket’s blast without damage from debris or being blown over.

in addition to the danger from the rocket, the cameras are also at risk of damage due to any form of precipitation. from the morning dew to florida’s humid climate, the journalists and photographers have developed ways to keep moisture out.

“i’ve had lenses that got waterlogged because of rain — two of them,” said ken kremer from universe today. to prevent this, many wrap their devices in plastic bags or tape their camera containers to be airtight.

leek even developed his own lens heaters to dry up any condensation in his lenses. “it’s a ring that goes around. it’s got velcro on it, it’s got tape on it, it’s got cables on it, it’s got a timer on it, it’s got another battery on it. and you set that timer two hours before the launch and the heater comes on and it heats that lens up … and goes ahead and dries it out.”

after the rocket is well on its way, the journalists and photographers return to the barren launch pad to collect their machinery  or — in some cases, what’s left of it — and anxiously check to see how their contraptions preformed in capturing the event.

“no matter what launch you do, you look at it as an experiment because you never know what’s going to happen. things just happen,” said lane hermann, author and freelance space journalist. “you get what you get, and if you don’t get it, you don’t get it.”

the launch occurred at 6:42 p.m. est and within a few hours nasa’s pam sullivan, the goes-r mission director, confirmed the craft had successfully deployed its solar arrays. however, it will take goes-r, now called goes-16 after deployment, nine days to phase into its planned orbital route and about five months before it is fully operational.

the goes-r launch activities can be viewed on nasa television, and further updates and information can be accessed at goes-r.gov.

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space-age aeroponics for the home //www.getitdoneaz.com/story/space-age-aeroponics-for-the-home/ thu, 12 jul 2012 12:30:08 +0000 http://dpetrov.2create.studio/planet/wordpress/space-age-aeroponics-for-the-home/ growing food to sustain a healthy diet. no soil needed and does not take up a lot of space. this is not my invention but i picked it up from nasa. but their system was expensive. i decided to make my own using common and available products. i have been perfecting my home made system for over a year. i have a blog where i share how i made my system and have been spreading the word often. i have videos of the proof and feel that this is something that people will have in their homes in the future as food prices go up and become less available. everything i have been doing is at http://myaeroponics.com

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