#microgravity — Public Fediverse posts

https://www.europesays.com/ie/481937/ NASA Spaceline Current Awareness List #1,199 8 May 2026 (Space Life Science Research Results) #Astrobiology #Éire #IE #Ireland #ISS #microgravity #Science #SpaceBiology #SpaceLifeScience #SpaceMedicine #spaceline

🐭🚀Mice from #OuterSpace: New preprint by Kiffer et al. applies #SLEAP pose tracking and #DeepEthogram behavioral segmentation to archival mouse videos from #NASA’s Rodent Research-1 mission aboard the #ISS 🛰️

Turns out: In #microgravity, mice reorganize behavior fast. They cluster for rest, launch themselves across the cage, and develop acrobatic looping movements as they adapt to orbital life 💫

📝 https://doi.org/10.64898/2026.04.30.721950

#Neuroscience #Behavior #SpaceBiology #space

https://www.europesays.com/ie/461358/ Why NASA Wants to Start a Fire on the Moon #Artemis #ArtemisIII #AstronautSafety #combustion #Éire #IE #Ireland #ISS #LunarExploration #LunarFireSafety #MaterialsScience #microgravity #Moon #nasa #Science #Space #SpaceHabitats

Video Shows NASA Astronaut Struggling to Walk After Journey Around the Moon

Spending prolonged periods of time in the microgravity of space can wreak havoc on our bodies. Scientists have…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Science #ChristinaKoch #eyesclosed #microgravity #NASA #nasaastronaut #prolongedperiods #senseofbalance
https://www.newsbeep.com/us/612229/

Video Shows NASA Astronaut Struggling to Walk After Journey Around the Moon

Spending prolonged periods of time in the microgravity of space can wreak havoc on our bodies. Scientists have…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Science #ChristinaKoch #eyesclosed #microgravity #NASA #nasaastronaut #prolongedperiods #senseofbalance
https://www.newsbeep.com/us/612229/

How Microgravity Affects Male Sexual Function in Space

📰 Original title: Houston, we have a performance problem

🤖 IA: It's clickbait ⚠️
👥 Usuarios: It's clickbait ⚠️

View full AI summary: https://killbait.com/en/how-microgravity-affects-male-sexual-function-in-space/?redirpost=b1ba98ed-b0b3-4373-8702-4151f8becd49

#science #space #sexualhealth #microgravity

🪐🥔 #Astronaut Don Pettit cultivated purple #potatoes using a hydroponic system on the #ISS.

The sprouts grew in multiple directions due to the absence of gravity and created a shape that resembled a purple lifeform with tentacles.

👉 https://www.sciencealert.com/purple-lifeform-photographed-sprouting-tentacles-on-the-iss

#space #nasa #botany #science #microgravity #gardening #hydroponics #biology #agriculture #exploration

https://www.europesays.com/ie/410416/ Space Biology: CBIOMES Preflight Microscopic Imagery Of C. elegans #CElegans #CBIOMES #Éire #genomics #IE #Ireland #Microbiome #Microfluidics #microgravity #nematode #Science #SpaceBiology #SpaceLifeScience #Spaceflight

https://www.europesays.com/ie/377089/ NASA Spaceline Current Awareness List #1,190 6 March 2026 (Space Life Science Research Results) #Éire #IE #Ireland #ISS #microgravity #nasa #Science #SpaceBiology #SpaceLifeScience #SpaceMedicine #spaceline

NASA Spaceline Current Awareness List #1,190 6 March 2026 (Space Life Science Research Results)

The abstract in PubMed or at the publisher’s site is linked when available and will open in a…
#UnitedStates #US #USA #america #ISS #microgravity #nasa #science #spacebiology #spacelifescience #spacemedicine #spaceline #technology #unitedstatesofamerica
https://www.europesays.com/2835111/

RE: https://mastodon.social/@ieeespectrum/116161355450080606

Between 1973 and 2016, around 160 #semiconductor crystals were grown in #microgravity aboard various spacecraft. 86 percent of those space-grown 🌌 crystals grew larger, were more uniform, and showed better performance. There is potential for significant #energy savings, perhaps as much as 50 percent 📊

https://www.europesays.com/ie/365254/ NASA Spaceline Current Awareness List #1,189 27 February 2026 (Space Life Science Research Results) #Éire #IE #Ireland #ISS #microgravity #Science #SpaceBiology #SpaceLifeScience #SpaceStation #spaceline

@16bitnights Have you read Alexis #Gililand's #Rosinante books? Not so much a trilogy as 3 interleaved novels (looking a bit topical BTW)
There's a bit of discussion and business in there about #riflery in #microgravity.

Fire a rifle in near-earth orbit, and if you didn't hit anything the projectile will be back with you in half an orbit.
You might choose a projectile which evaporates in 40 minutes.

An international team of astronauts has arrived at the International Space Station after docking following a roughly 34-hour journey from Earth. The crew includes French astronaut Sophie Adenot, American astronauts Jessica Meir and Jack Hathaway, and Russian cosmonaut Andrey Fedyaev.

#ISS #SpaceStation #Crew12 #NASA #SpaceX #Astronauts #SpaceExploration #Microgravity

SpaceX launches 12th long-duration crew to the ISS

A SpaceX rocket soared into orbit from Florida with a crew of two US NASA astronauts, a French astronaut and a Russian cosmonaut headed to the International Space Station for an eight-month science mission in microgravity. #spacex #internationalspacestation #iss #nasa #space #microgravity #News #Reuters #Newsfeed Read the story here: 👉 Subscribe: Keep up with the latest news from around the world: Follow Reuters on…

https://fllics.com/en/video/spacex-launches-12th-long-duration-crew-to-the-iss/

UvA physicists 3D-printed #SoftMatter in zero gravity aboard MAPHEUS-16. COLORS experiment revealed how internal stresses form in droplets—key for stronger 3D-printed materials and #bioprinting, both in space and on Earth.

https://phys.org/news/2026-02-rocket-science-3d-soft-gravity.html

#3DPrinting #Microgravity #FluidDynamics

Living in space can change where your brain sits in your skull – new research
#Science #Brain #SpaceResearch #Neuroscience #NASA #SpaceHealth #Microgravity #AstronautLife #BrainMRI #ISS #STEM #Physiology #SpaceMedicine #Health #Innovation #ArtemisProgram
https://the-14.com/living-in-space-can-change-where-your-brain-sits-in-your-skull-new-research/

Living in space can change where your brain sits in your skull – new research
#Science #Brain #SpaceResearch #Neuroscience #NASA #SpaceHealth #Microgravity #AstronautLife #BrainMRI #ISS #STEM #Physiology #SpaceMedicine #Health #Innovation #ArtemisProgram
https://the-14.com/living-in-space-can-change-where-your-brain-sits-in-your-skull-new-research/

Google AI overview on the query 'carotid body head down tilt' (just thought it interesting) -

Head-down tilt (HDT) typically induces a cephalad fluid shift, increasing intracranial pressure and altering hemodynamics in the carotid arteries. While HDT can increase cerebral perfusion, studies indicate it often causes a decrease in carotid artery blood flow velocity, despite increasing vessel diameter, as the body adapts to fluid redistribution. 

Key Findings on Carotid Body/Artery and Head-Down Tilt: 

Carotid Blood Flow Changes: Research on older adults suggests total blood flow in the carotid artery decreases during HDT compared to supine positions.

Velocity and Diameter: Studies show that when moving from a supine to a -30 degree head-down tilt, blood flow velocities in the common carotid (CCA), internal carotid (ICA), and internal jugular vein (IJV) significantly decrease, while diameters increase.

Brain Perfusion: Despite reduced carotid blood flow velocity, HDT (e.g., -15 degree to -30 degree) can increase overall cerebral blood flow (CBF) and is sometimes used to improve cerebral perfusion in ischemic stroke patients.

Carotid Sinus/Body Interaction: The increased pressure in the neck vessels (carotid sinus) during HDT acts as a stimulant for cardiovascular regulation, potentially reducing heart rate and blood pressure to manage increased blood volume in the head.

Short-term vs. Long-term: While acute, short-term HDT (-10 degree to -30 degree) might preserve steady-state CBF due to robust cerebral regulation, long-term exposure can lead to complex changes in hemodynamics. 

These effects are often studied to simulate the cardiovascular adaptations to microgravity (spaceflight) or to evaluate therapeutic positions for improved brain oxygenation. 

link to query result, which provides references -
https://share.google/aimode/GwxCWJMl8NtRAocbz

#physiology #microgravity #CerebralPerfusion #HeadDownTilt

How Space Reshapes Human Biology: The DNA Shift 🚀🧬

The Headline: Space travel doesn't change your DNA code, but it changes how your body reads it.
When astronauts return from long-term missions, they are genetically the same people, but their bodies have undergone a radical shift in gene expression.
#SpaceScience #NASA #Biology #DNA #Astronauts #MarsMission #Genetics #ScienceNews #Microgravity #HumanEvolution #TheScienceChannel

https://www.thesciencechannel.org/why-astronauts-dna-is-changing-in-space/

A Soft Cell in Microgravity

There are many shapes that can be tiled to fill space, but nearly all of them have sharp corners. Last year, mathematicians identified a new class of shapes, known as “soft cells,” that feature curved edges and faces but very few sharp corners. Like traditional polyhedrals, soft cells can tile to fill a space completely without overlapping or gapping.

Now the researchers, with some help from astronauts aboard the ISS, have brought one of their soft cells to life. Using an edge skeleton to guide the shape, astronaut Tibor Kapu filled the skeleton with water, which, in microgravity, formed a perfect soft cell, complete with faces curved by surface tension to their minimal area. See it in action below. (Image and video credit: HUNOR/NASA; research credit: G. Domokos et al.; via Oxford Mathematics)

https://www.youtube.com/shorts/EyMbqPUKl80

#KnowledgeBit: #Microgravity is the condition in which people or objects appear to be weightless.

The most commonly known microgravity environment can be found aboard the ISS which is located in low-earth orbit at an altitude of around 400 km, orbiting Earth approximately 15 times per day in what is considered free fall.

https://knowledgezone.co.in/kbits/638ddd93372932e556ab0877

🤮 The ups and downs of space research

https://phys.org/news/2025-11-ups-downs-space.html

#space #aviation #research #gravity #zerogravity #microgravity

How the zero-g coffee cup works. Scroll down a bit for a video.

https://svs.gsfc.nasa.gov/11412

#coffee #space #ISS #SpaceExploration #technology #ZeroG #microgravity

The #crew 👩‍🚀 will in some ways be human guinea pigs 🐀 (10 days in 9m³).

Experiments will monitor how their bodies are affected by space 🌌. "We want to be able to study in depth the effect of the #microgravity and the #radiation ☢️".

On arrival, the astronauts will begin a #dangerous part of the mission as they re-enter 🔥 the Earth's #atmosphere https://www.bbc.com/news/articles/cy7pegvz17yo

#NASA #Artemis #HumanSpaceflight

A truly global endeavor, the International Space Station has been visited by more than 280 people from 23 countries and a variety of international and commercial spacecraft.

The unique #Microgravity laboratory has hosted more than 4,000 experiments from more than 5,000 researchers in more than 110 countries.

https://knowledgezone.co.in/posts/International-Space-Station--A-Short-Introduction-60851d101d8862a169d56322

🚀🌡️ Spacecraft safety boost! ESA’s ISS experiment studies condensation in microgravity, revealing how liquid films behave on fins. New insights could optimize cooling for electronics & life-support systems! Read more: https://thedebrief.org/nowhere-else-could-we-have-achieved-this-the-fundamental-physics-experiment-aboard-the-iss-that-will-improve-spacecraft-safety/

@goodnews

#GoodNews #ISSResearch #SpaceTech #Microgravity #SafetyInnovation

Magnetically induced convection enhances water electrolysis in #microgravity: https://www.nature.com/articles/s41557-025-01890-0 -> New Research Enhances Oxygen Production for Space Missions: https://www.zarm.uni-bremen.de/en/news-list/news-display?tx_news_pi1%5Baction%5D=detail&tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Bnews%5D=422&cHash=848685cc29bedccacbabce23b44180b5 - a breakthrough in space life support systems, simply because water is magnetic.

New #Bacteria Have Been Discovered on a #Chinese Space Station

It is microscopic and rod-shaped, can create #spores, and may have evolved to #survive hundreds of miles above our planet’s surface.

This #bacterium, never before seen on Earth, was detected on #China's #Tiangong #space station. It has been named Niallia tiangongensis, and it inhabited the cockpit controls on the station, living in #microgravity conditions.

https://www.wired.com/story/bacteria-unknown-on-earth-appears-on-chinese-space-station/

#SpaceStation #ET #ExtraTerrestrial #science

🛰️🚀 The folks at #DARPA are apparently on a cosmic quest to grow #interstellar #houseplants in #microgravity, because regular gravity was just too mainstream. 🌱 Perhaps they're hoping to build the first space-age treehouse for astronauts who need a break from all the serious science. 🌌🧠
https://sam.gov/opp/426e5868fcf74dd4ada3768b00b09234/view #SpaceInnovation #HackerNews #ngated

DARPA exploring growing bio structures of "unprecedented size" in microgravity — https://sam.gov/opp/426e5868fcf74dd4ada3768b00b09234/view
#HackerNews #DARPA #bioengineering #microgravity #spaceinnovation #biostructures #technews

#Space travel isn't truly safe. Research shows #microgravity has detrimental, long-lasting effects on the human body. But mimicking weightlessness on Earth could help develop cancer treatments. Biomedical engineers explain: https://buff.ly/4h82Dep

Ice Without Gravity

Astronaut Don Pettit is back in space, and that means lots of awesome microgravity experiments. Here, he grew thin wafers of ice in microgravity in a -95 degree Celsius freezer. Then he took the ice wafers and photographed them between crossed polarizers, creating this colorful image. The colors highlight different crystal orientations within the ice and give us a hint about how the freezing front formed and expanded. I can’t wait to see more examples! (Image credit: D. Pettit/NASA; via Ars Technica; submitted by J. Shoer)

#astronaut #crystalGrowth #fluidDynamics #fluidsAsArt #iceFormation #microgravity #physics #polarizedLight #science

Sound and Water Make Weird Vibes in Microgravity https://hackaday.com/2024/04/29/sound-and-water-make-weird-vibes-in-microgravity/ #MusicalHacks #microgravity #soundwaves #Science #audio #water

Sound and Water Make Weird Vibes in Microgravity - NASA astronaut [Don Pettit] shared a short video from an experiment he performed o... - https://hackaday.com/2024/04/29/sound-and-water-make-weird-vibes-in-microgravity/ #musicalhacks #microgravity #soundwaves #science #audio #water

FAA Recommended Practices for Human Space Flight Occupant Safety

#Astronauts #CommercialCrewProgram #CommercialSpace #CommercialSpaceTransportation #Earth #FAA #Government #Gravity #HumanSpaceflight #Infrastructure #Launch #Life #Mars #Materials #Microgravity #MissionControl #Navigation #Radiation #Research #Science #SolarStorms #SpaceAgencies #SpaceExploration #SpaceTourism #SpaceTravel #Spacecraft #Spaceflight #Standards #Technology #EditorSPicks #Emerging #GroundSegment #IndustryReportsPapersAndEBooks #Infrastructure #Launch #LaunchSegment #Noteworthy #PolicyLawAndRegulation #SocioEconomic #SpaceEconomy #SpaceSegment #Upstream #UserSegment

https://newspaceeconomy.ca/2024/04/22/faa-recommended-practices-for-human-space-flight-occupant-safety/

Varda Space have Successfully Demonstrated the Feasibility of Processing Pharmaceuticals in Microgravity Environments

#Earth #Falcon9 #ManufacturingInSpace #Microgravity #Radiation #SpaceX #VardaSpace #CompanyProfiles #EditorSPicks #IndustryReportsPapersAndEBooks #Manufacturing #News #SocioEconomic #SpaceEconomy

https://newspaceeconomy.ca/2024/04/01/return-of-the-ritonavir-stability-of-pharmaceuticals-processed-in-orbit/

NASA Twins Study Reveals Effects of Long-Duration Spaceflight on the Human Body

#Astronauts #Countermeasures #Earth #Gravity #InternationalSpaceStation #ISS #Life #Mars #Microgravity #Moon #NASA #Research #SpaceAgencies #SpaceStation #Spaceflight #UnitedStates #EditorSPicks #IndustryReportsPapersAndEBooks #Noteworthy #SpaceEconomy

https://newspaceeconomy.ca/2024/04/01/nasa-twins-study-reveals-effects-of-long-duration-spaceflight-on-the-human-body/

Report: Why Space? The Opportunity for Material Science and Innovation (Catapult 2024)

#3DPrinting #AsteroidMining #CommercialSpace #CriticalInfrastructure #Earth #Energy #Gravity #Infrastructure #Investment #Lunar #Manufacturing #Mars #Materials #Microgravity #Nuclear #Radiation #Research #Science #SolarFlares #SpaceSector #Spacecraft #Traditions #UK #EditorSPicks #Emerging #IndustryReportsPapersAndEBooks #MarketDataAndAnalysis #Noteworthy #SocioEconomic #SpaceEconomy #SpaceLogistics

https://newspaceeconomy.ca/2024/03/25/report-why-space-the-opportunity-for-material-science-and-innovation-catapult-2024/

The Perils of Mars: How a Crewed Mission to the Red Planet Could End in Disaster

#Accident #Astronauts #Communications #CosmicRadiation #DeepSpace #Earth #ElonMusk #Energy #Gravity #Launch #Life #Mars #Medicine #Microgravity #NASA #Navigation #Radiation #Rockets #Satellites #Science #ScienceFiction #SolarFlares #SpaceAgencies #SpaceExploration #Spacecraft #SpaceX #EarthAndOrbit #EditorSPicks #Mars #Moon #Noteworthy #PolicyLawAndRegulation #SocioEconomic #SpaceEconomy

https://newspaceeconomy.ca/2024/03/18/the-perils-of-mars-how-a-crewed-mission-to-the-red-planet-could-end-in-disaster/

🇨🇳 Each lab ⚗️ hosts a number of simulators that recreate different sets of conditions, including #microgravity, solar radiation ☢️, #space dust and extremely low temperatures ❄️.

The lunar 🌙 dust simulation chamber can be used to study the dust’s formation and its effect on #spacecraft, #spacesuits and #astronauts 👨‍🚀. https://www.scmp.com/news/china/science/article/3253623/worlds-largest-space-environment-simulator-launched-northeast-china

Pakistan Sets Sights on the Stars with New National Space Policy

#Agriculture #Infrastructure #Launch #Manufacturing #Microgravity #Navigation #Pakistan #PlanetaryScience #Policy #RemoteSensing #Research #Robotics #Satellites #Science #SpaceAgencies #SpaceEconomy #SpaceExploration #SpaceIndustry #SpacePolicy #SpaceSector #Strategy #Technology #UrbanPlanning #ValueChain #IndustryReportsPapersAndEBooks #PolicyLawAndRegulation #SocioEconomic #SpaceEconomy

https://newspaceeconomy.ca/2024/02/29/pakistan-sets-sights-on-the-stars-with-new-national-space-policy/

Robots Used on the International Space Station (ISS)

#AI #Astronauts #CanadianSpaceAgency #CSA #ESA #EuropeanSpaceAgency #InternationalSpaceStation #ISS #Lunar #Mars #Microgravity #NASA #Research #Robotics #SpaceAgencies #SpaceExploration #SpaceShuttle #SpaceStation #Spacecraft #Technology #Downstream #EditorSPicks #SpaceEconomy #SpaceSegment #Upstream #UserSegment

https://newspaceeconomy.ca/2024/02/20/robots-used-on-the-international-space-station-iss/

Management of Consumable Resources on the International Space Station (ISS)

#Agriculture #Astronauts #AttitudeControl #CargoSpacecraft #DeepSpace #Energy #ESA #Financial #InternationalSpaceStation #ISS #JAXA #Launch #Mars #Microgravity #NASA #NorthropGrumman #Research #Roscosmos #SpaceAgencies #SpaceDebris #SpaceExploration #SpaceLogistics #SpaceStation #Spacecraft #SpaceX #Sun #Technology #EditorSPicks #PolicyLawAndRegulation #SpaceEconomy #SpaceLogistics #SpaceSegment #SpaceSustainability #Upstream

https://newspaceeconomy.ca/2024/02/01/management-of-consumable-resources-on-the-international-space-station-iss/

• When you’re in #microgravity, all those systems still work to push fluids to the upper body, unopposed by gravity, so you get this #swelling of tissues in the head 🤯
• In some crew members, in addition to mild visual changes, there have been findings such as optic nerve swelling, retinal changes, changes in the shape of the eye 👁️ and a suggestion that there might be an increase in intracranial pressure
• Up to a third of muscle 💪 from particular muscle groups being lost 〽️ within seven to 10 days of flight. This also includes deterioration of heart ❤️ muscle
• Lack of gravity also has the effect of causing bone 🦴 to, almost literally, dissolve away
• With a new dawn 🌅 every 90 minutes, #astronauts struggle to adapt to artificial night times 😴
• There is growing evidence that #spaceflight has a detrimental effect on the immune system ⚕️.
• Astronauts often report “seeing” bright flashes ⚡ of light, which are caused by cosmic rays passing through their brains 🧠
https://www.bbc.com/future/article/20140506-space-trips-bad-for-your-health

What is CNES and Its Relevance to the Space Economy?

#Ariane #Astrophysics #ClimateChange #CommercialSpace #CompetitiveLandscape #EarthObservation #ESA #Europe #EuropeanSpaceAgency #France #Historical #Launch #LaunchVehicles #Mars #Microgravity #NASA #NaturalDisasters #PlanetaryScience #Policy #Research #Rockets #SatelliteTechnology #Satellites #Science #SpaceAgencies #SpaceCompanies #SpaceEconomy #SpaceExploration #SpaceIndustry #SpacePolicy #SpaceResources #SpaceSector #Technology #MarketDataAndAnalysis #PolicyLawAndRegulation #SocioEconomic #SpaceEconomy

https://newspaceeconomy.ca/2023/12/03/what-is-cnes-and-its-relevance-to-the-space-economy/

📆 Jan 21, 2022 #Cement mixed in #space 🌌 has different properties than cement mixed on #Earth 🌍. The #Microgravity Investigation of Cement Solidification (#MICS) study conducted aboard the International #SpaceStation recently published results examining Lunar 🌙 #regolith simulant (#JSC1A) for its potential use as a #lunar construction 🏗️ material. https://www.nasa.gov/missions/station/five-space-station-research-results-contributing-to-deep-space-exploration

📆 Oct 26, 2020 20 #scientific and #technological breakthroughs achieved as a result of #SpaceStation #science https://www.nasa.gov/missions/station/20-breakthroughs-from-20-years-of-science-aboard-the-international-space-station

#ISS #NASA #SpaceScience

#Flies 🦟 exposed to #μg conditions show behavioral and #neuronal deficits, #glial alterations, #oxidative damage, and #apoptosis https://www.cell.com/cell-reports/fulltext/S2211-1247(22)01099-3

Glial cells : cells in the central nervous system (brain and spinal cord) and the peripheral nervous system https://en.wikipedia.org/wiki/Glia
Apoptosis : programmed cell #death ☠️ that occurs in multicellular organisms https://en.wikipedia.org/wiki/Apoptosis

#Spaceflight #microgravity

Biotech to Synthesize Proteins in Microgravity

A #biotechnology company synthesizing pure #proteins from #DNA is preparing to test its process in #weightless conditions on the International #Space Station.

https://sciencebusiness.technewslit.com/?p=44470

#News #Science #Business #SyntheticBiology #Chemistry #NASA #InternationalSpaceStation #Microgravity #NationalLaboratory #Boeing #Grant #Award #StartUp

#AerospaceAmerica : The 📆 2022 Year in Review

• #SpaceArchitecture: Accelerating architecture for low-Earth orbit and beyond
• #SpaceTransportation: Another record-setting year for #spaceflight
• #SpaceLogistics: Development of on-#orbit #servicing, assembly and manufacturing creates new capabilities in #spacefaring operations
• Experiments to use space #resources make great strides
• Processes: Multiple #microgravity laboratories help advance fluid dynamics and combustion #research
• New #suit designs and methods to #survive in space
#SpaceSystems: New windows into the universe and new commercial space capabilities
• #Robotics for in-space servicing, assembly and manufacturing is key for sustainable space infrastructure
• Reusable Launch Vehicles: #Rocket manufacturers face challenges in push for #reusable #launchvehicle development
• Small #satellites spread beyond niche roles
• Space tethers focus on deorbit and #debris mitigation
https://aerospaceamerica.aiaa.org/year-in-review-index/2022

#AIAA #SpaceNews