Science
NASA Science, Cargo Heads to Space Station on Northrop Grumman Resupply Mission – Stockhouse
WASHINGTON , Oct. 3, 2020 /PRNewswire/ — A Northrop Grumman Cygnus resupply spacecraft is on its way to the International Space Station with nearly 8,000 pounds of scientific investigations, technology demonstrations, commercial products, and other cargo after launching at 9:16 p.m. EDT Friday from NASA’s Wallops Flight Facility on Wallops Island, Virginia .
The spacecraft launched on an Antares rocket from the Virginia Mid-Atlantic Regional Spaceport’s Pad 0A at Wallops and is scheduled to arrive at the space station around 5:20 a.m. Monday , Oct. 5. Coverage of the spacecraft’s approach and arrival will begin at 3:45 a.m. on NASA Television and the agency’s website .
Expedition 63 Commander Chris Cassidy of NASA will use the space station’s robotic arm to capture Cygnus, while Ivan Vagner of Roscosmos monitors telemetry during rendezvous, capture, and installation on the Unity module’s Earth-facing port.
Cygnus will remain at the space station until mid-December before it disposes of several thousand pounds of trash as it burns up during a safe re-entry into Earth’s atmosphere.
This delivery – Northrop Grumman’s 14th contracted cargo flight to the space station and the third under its Commercial Resupply Services 2 contract with NASA – will support dozens of new and existing investigations.
Included aboard Cygnus for delivery to the space station are:
Improving how we ‘go’ in space
A new toilet is headed to the space station. Its features improve on current space toilet operations and help NASA prepare for future missions, including those to the Moon and Mars. The Universal Waste Management System ( UWMS ) demonstrates a compact toilet and the Urine Transfer System that further automates waste management and storage. The smaller footprint of the UWMS supports a possible increase in the number of crew members aboard the space station, as well as planning for future exploration missions.
Energy and water from waste
The investigation Elucidating the Ammonia Electrochemical Oxidation Mechanism via Electrochemical Techniques at the ISS ( Ammonia Electrooxidation ) examines a process for ammonia oxidation in microgravity. An electrochemical ammonia removal system could serve as an innovative water recovery system on long-duration missions to the Moon and Mars and provide vital drinkable water in remote and arid areas on Earth.
Adding radishes to the space salad
A new crop of vegetables is headed to the space station. While previous experiments have grown different types of lettuces and greens aboard the orbiting laboratory, the Assessment of Nutritional Value and Growth Parameters of Space-grown Plants ( Plant Habitat-02 ) investigation adds radishes to the mix, cultivating seeds to see how different light and soil conditions affect growth. Findings could help optimize growth of the plants in space, as well as provide an assessment of their nutrition and taste.
Identifying targeted cancer treatments
The Leveraging Microgravity to Screen Onco-selective Messenger RNAs for Cancer Immunotherapy ( Onco-Selectors ) investigation tests drugs based on messenger ribonucleic acids (mRNA) for treating leukemia. In normal gravity, the drugs to be tested are onco-selective, meaning they can distinguish cancer cells from healthy ones. Researchers expect any drugs that also demonstrate this trait in microgravity could make good candidates for safer, more effective, and affordable medicines to treat leukemia and other cancers. This could improve survival rates for thousands of people every year.
Spacewalks in virtual reality
The International Space Station Experience ( ISS Experience ) is creating an immersive virtual reality series documenting life and research aboard the space station. Partnering with the ISS National Lab and TIME , a team from Felix and Paul Studios launched a customized 360-degree camera to the space station in December 2018 that crew members have used to record a few hours inside the station every week. Felix and Paul and partner NanoRacks further modified an additional camera to withstand the extreme conditions of space and are launching for use in filming a spacewalk. The new camera will be mounted to the Canadarm2 to capture a spacewalk from start to finish as well as footage of Earth and the exterior of the space station.
These are just a few of the hundreds of investigations currently being conducted aboard the orbiting laboratory in the areas of biology and biotechnology, physical sciences, and Earth and space science. Advances in these areas will help to keep astronauts healthy during long-duration space travel and demonstrate technologies for future human and robotic exploration beyond low-Earth orbit to the Moon and Mars through NASA’s Artemis program.
In addition to science and research, this launch will also support commercial space endeavors. Estée Lauder’s New Advanced Night Repair serum will be photographed in the space station’s iconic cupola window as part of NASA’s efforts to enable commercial activities at the space station and develop a robust low-Earth orbit economy . The imagery will be used on the brand’s social media platforms. These opportunities can help catalyze and expand space exploration markets for many businesses.
The Cygnus spacecraft for this resupply mission is named in honor of Kalpana Chawla , who made history at NASA as the first female astronaut of Indian descent. Chawla, who dedicated her life to understanding flight dynamics, lost her life during the STS-107 mission when the space shuttle Columbia disintegrated upon reentering Earth’s atmosphere.
Learn more about Northrop Grumman’s mission at:
http://www.nasa.gov/northropgrumman/
Get breaking news, images and features from the space station on Instagram , Facebook , and Twitter .
SOURCE NASA
Science
Mar 30: An Australian Atlantis and other lost landscapes, and more… – CBC.ca
Quirks and Quarks54:00An Australian Atlantis and other lost landscapes, and more…
On this week’s episode of Quirks & Quarks with Bob McDonald:
Archaeologists identify a medieval war-horse graveyard near Buckingham Palace
Quirks and Quarks9:04Archaeologists identify a medieval war-horse graveyard near Buckingham Palace
We know knights in shining armour rode powerful horses, but remains of those horses are rare. Now, researchers studying equine remains from a site near Buckingham Palace have built a case, based on evidence from their bones, that these animals were likely used in jousting tournaments and battle. Archaeologist Katherine Kanne says the bone analysis also revealed a complex, continent-crossing medieval horse trading network that supplied the British elite with sturdy stallions. This paper was published in Science Advances.
In an ice-free Arctic, polar bears are dining on duck eggs — and gulls are taking advantage
Quirks and Quarks9:22In an ice-free Arctic, Polar bears are dining on duck eggs — and gulls are taking advantage
Researchers using drones to study ground-nesting birds in the Arctic have observed entire colonies being devastated by marauding polar bears that would normally be out on the ice hunting seals, except the ice isn’t there. What’s more, now they’re enabling a second predator — hungry gulls that raid the nests in the bears’ wake. Andrew Barnas made the observations of this “gull tornado” by following around polar bears in East Bay Island in Nunavut. The research was published in the journal Ecology and Evolution.
A NASA mission might have the tools to detect life on Europa from space
Quirks and Quarks8:05A NASA mission might have the tools to detect life on Europa from space
NASA’s Europa Clipper mission, due to launch this fall, is set to explore the jewel of our solar system: Jupiter’s moon, Europa. The mission’s focus is to determine if the icy moon, thought to harbour an ocean with more water than all of the water on Earth, is amenable to life. However, postdoctoral researcher Fabian Klenner, now at the University of Washington, demonstrated how the spacecraft may be able to detect fragments of bacterial life in a single grain of ice ejected from the surface of the moon. The study was published in the journal Science Advances.
Pollution is preventing pollinators from recognizing floral plants by scent
Quirks and Quarks7:50Pollution is preventing pollinators from finding plants by scent
Our polluted air is transforming floral scents so pollinators that spread their pollen can no longer recognize them. In a new study in the journal Science, researchers found that a certain compound in air pollution reacts with the flower’s scent molecules so pollinators — like the hummingbird hawk-moths that pollinate at night — fail to recognize them. Jeremy Chan, a postdoctoral researcher at the University of Naples, said the change in scent made the flowers smell “less fruity and less fresh.”
An Australian Atlantis and underwater archeological remains in the Baltic
Quirks and Quarks17:14An Australian Atlantis and underwater archeological remains in the Baltic
During the last ice age, sea levels were more than 100 metres lower than they are today, which means vast tracts of what are currently coastal seafloor were dry land back then. Geologists and archaeologists are searching for these lost landscapes to identify places prehistoric humans might have occupied. These included a country-sized area of Australia that could have been home to half a million people. Archaeologist Kasih Norman and her colleagues published their study of this now-drowned landscape in Quaternary Science Reviews.
Another example is an undersea wall off the coast of Northern Germany that preserves an underwater reindeer hunting ground, described in research led by Jacob Geersen, published in the journal PNAS.
Science
Solar eclipse April 8 – South Grey News
March 28, 2024
Graphic: Appalachian Mtn Club
Grey Bruce Public Health is urging residents to resist the temptation to look directly at the sun during the upcoming solar eclipse and take steps to safeguard their visual health during this relatively rare celestial event.
On April 8, 2024, parts of southern and eastern Ontario will experience a total solar eclipse for the first time since 1925. Grey-Bruce will be outside of the so-called Path of Totality — a narrow area where the moon will completely block out the sun — but will still experience a partial eclipse.
The eclipse is expected to begin at about 2 pm and continue until 4:30 pm The eclipse will peak around 3:20 pm.
It is never safe to stare directly at the sun, but it may be tempting to do so during a solar eclipse.
Looking directly at the sun during an eclipse can cause retinal burns, blurred vision, and/or temporary or permanent loss of visual function, according to the Ontario Association of Optometrists. Damage to the eyes can occur without any sensation of pain.
Grey Bruce Public Health advises the following:
- Do not look directly at the sun without proper eye protection during the solar eclipse. Looking at even a small sliver of the sun before or after the eclipse without proper eye protection can harm vision.
- Keep a close eye on children and other vulnerable family members during the eclipse to ensure they do not inadvertently look up at the sun without proper eye protection.
- To safely view the eclipse, ISO-certified eclipse glasses that meet the ISO 12312-2 international safety standard must be worn. Ensure these glasses are in good condition, without any wrinkles or scratches, and that they fully cover the entire field of vision. Put on the glasses when looking away from the sun, then look at the eclipse. Look away from the sun before taking the glasses off.
- Regular sunglasses or homemade filters will not protect the eyes.
- It is not safe to view the eclipse through a camera/phone lens, telescope, binoculars, or any other optical device.
Other ways to safely experience the solar eclipse include watching a livestream of the event or creating and using an eclipse box or pinhole projector.
Anyone experiencing temporary vision loss or blurred vision during or after the eclipse should speak with their eye care professional or healthcare provider as soon as possible.
Anyone experiencing blindness (immediate or delayed) after viewing the eclipse must seek emergency care immediately.
More information on the upcoming eclipse is available on the GBPH website.
At South Grey News, we endeavour to bring you truthful and factual, up-to-date local community news in a quick and easy-to-digest format that’s free of political bias. We believe this service is more important today than ever before, as social media has given rise to misinformation, largely unchecked by big corporations who put profits ahead of their responsibilities.
South Grey News does not have the resources of a big corporation. We are a small, locally owned-and-operated organization. Research, analysis and physical attendance at public meetings and community events requires considerable effort. But contributions from readers and advertisers, however big or small, go a long way to helping us deliver positive, open and honest journalism for this community.
Please consider supporting South Grey News with a donation in lieu of a subscription fee and let us know that our efforts are appreciated. Thank you.
Science
NASA to launch sounding rockets into moon's shadow during solar eclipse – Phys.org
NASA will launch three sounding rockets during the total solar eclipse on April 8, 2024, to study how Earth’s upper atmosphere is affected when sunlight momentarily dims over a portion of the planet.
The Atmospheric Perturbations around Eclipse Path (APEP) sounding rockets will launch from NASA’s Wallops Flight Facility in Virginia to study the disturbances in the ionosphere created when the moon eclipses the sun. The sounding rockets had been previously launched and successfully recovered from White Sands Test Facility in New Mexico, during the October 2023 annular solar eclipse.
They have been refurbished with new instrumentation and will be relaunched in April 2024. The mission is led by Aroh Barjatya, a professor of engineering physics at Embry-Riddle Aeronautical University in Florida, where he directs the Space and Atmospheric Instrumentation Lab.
The sounding rockets will launch at three different times: 45 minutes before, during, and 45 minutes after the peak local eclipse. These intervals are important to collect data on how the sun’s sudden disappearance affects the ionosphere, creating disturbances that have the potential to interfere with our communications.
The ionosphere is a region of Earth’s atmosphere that is between 55 to 310 miles (90 to 500 kilometers) above the ground. “It’s an electrified region that reflects and refracts radio signals and also impacts satellite communications as the signals pass through,” said Barjatya. “Understanding the ionosphere and developing models to help us predict disturbances is crucial to making sure our increasingly communication-dependent world operates smoothly.”
The ionosphere forms the boundary between Earth’s lower atmosphere—where we live and breathe—and the vacuum of space. It is made up of a sea of particles that become ionized, or electrically charged, from the sun’s energy or solar radiation.
When night falls, the ionosphere thins out as previously ionized particles relax and recombine back into neutral particles. However, Earth’s terrestrial weather and space weather can impact these particles, making it a dynamic region and difficult to know what the ionosphere will be like at a given time.
It’s often difficult to study short-term changes in the ionosphere during an eclipse with satellites because they may not be at the right place or time to cross the eclipse path. Since the exact date and times of the total solar eclipse are known, NASA can launch targeted sounding rockets to study the effects of the eclipse at the right time and at all altitudes of the ionosphere.
As the eclipse shadow races through the atmosphere, it creates a rapid, localized sunset that triggers large-scale atmospheric waves and small-scale disturbances or perturbations. These perturbations affect different radio communication frequencies. Gathering the data on these perturbations will help scientists validate and improve current models that help predict potential disturbances to our communications, especially high-frequency communication.
The APEP rockets are expected to reach a maximum altitude of 260 miles (420 kilometers). Each rocket will measure charged and neutral particle density and surrounding electric and magnetic fields. “Each rocket will eject four secondary instruments the size of a two-liter soda bottle that also measure the same data points, so it’s similar to results from fifteen rockets while only launching three,” explained Barjatya. Embry-Riddle built three secondary instruments on each rocket, and the fourth one was built at Dartmouth College in New Hampshire.
In addition to the rockets, several teams across the U.S. will also be taking measurements of the ionosphere by various means. A team of students from Embry-Riddle will deploy a series of high-altitude balloons. Co-investigators from the Massachusetts Institute of Technology’s Haystack Observatory in Massachusetts and the Air Force Research Laboratory in New Mexico will operate a variety of ground-based radars taking measurements.
Using this data, a team of scientists from Embry-Riddle and Johns Hopkins University Applied Physics Laboratory are refining existing models. Together, these various investigations will help provide the puzzle pieces needed to see the bigger picture of ionospheric dynamics.
When the APEP-sounding rockets launched during the 2023 annular solar eclipse, scientists saw a sharp reduction in the density of charged particles as the annular eclipse shadow passed over the atmosphere.
“We saw the perturbations capable of affecting radio communications in the second and third rockets, but not during the first rocket that was before peak local eclipse,” said Barjatya. “We are super excited to relaunch them during the total eclipse to see if the perturbations start at the same altitude and if their magnitude and scale remain the same.”
The next total solar eclipse over the contiguous U.S. is not until 2044, so these experiments are a rare opportunity for scientists to collect crucial data.
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