Why is GE Aerospace helping advance the science of contrails?
There is much still to be understood about all the variables that impact persistent contrail formation, as well as their long term climate impact.
When designing an engine, there are potential tradeoffs between reducing CO2 and non-CO2 emissions (contrails being one of those non-CO2 varietals, among others like NOx and soot). In order to ensure we are incorporating the right technologies to reduce total environmental impact and deliver value for our customers, It is important to understand the relative environmental and air quality impacts of various emissions species as precisely as possible.
The more we can reduce the uncertainty surrounding contrail formation and impact, the more likely the right incentive structures can be developed for the industry.
Tests like this one, with our partner NASA - National Aeronautics and Space Administration, demonstrate how we're advancing the science for the Future of Flight. As we work on next generation technology programs like the CFM International (CFM) RISE Program, we will continue to engage in and advocate for these vital public-private partnerships across the industry.
Here's a good read for more details about this test: https://lnkd.in/egjrKg26
That's a wrap for tonight's coverage of Alpha #FLTA005#NoiseOfSummer. After expected deployment, NASA - National Aeronautics and Space Administration's CubeSat teams are now awaiting acquisition of signal...AND the Firefly team successfully completed a second stage relight and nominal plane change following deployment. Congratulations to the entire mission team!
Communications & Engagement | Space Flight Awareness Program Manager at NASA
On Monday, April 8, most of North America will have the chance to see the Moon pass in front of the Sun during a solar eclipse. NASA - National Aeronautics and Space Administration astronauts Jeanette Epps, PhD and Tracy C. Dyson talk about the total solar eclipse and their vantage point from the International Space Station soaring 260 miles above the Earth. To learn more about the total solar eclipse, visit: go.nasa.gov/Eclipse2024
66 years ago today, on July 29, 1958, the seeds of the civilian agency NASA were planted. That was the day that the U.S. Congress passed legislation establishing the National Aeronautics and Space Administration (NASA).
Since its inception, NASA has sponsored and launched both human and mechanical expeditions into space. And NASA's satellites have also yielded important information on weather forecasting, global communications, the atmosphere, navigation, and more.
And Michigan Technological University's relationship with NASA runs deep, too.
For instance, last year, MTU's Planetary Surface Technology Development Lab (https://huskyworks.space/) was chosen to advance to Phase 2, Level 3 of the Watts on the Moon Challenge.
#nasa#moon#aerospace#wattsonthemoon#space#spaceexploration#michigantech
NASA Twin Study: Telomere Length Changes in Scott Kelly, the ISS Astronaut
In my perspective, the most noteworthy revelation from the NASA twin study was the elongation of Scott Kelly's telomeres as an adaptive response to the challenging conditions of space, as outlined in this study: https://lnkd.in/ezQ2WM7K.
Scott Kelly experienced alterations in his DNA, including telomere elongation, which were not observed in his twin brother, providing valuable insights into the impact of space travel on human health. The observed changes in telomere length during space travel are unsurprising and may signify an adaptive response to significant space stressors, including radiation.
Concerning the NASA Twin Study, we previously reported that telomere elongation may be attributed to a well-established biological adaptive response to the space environment [1]. Interestingly, studies in high background radiation areas of Ramsar, Iran [2], and Kerala, India [3], found no alterations in telomere length. However, the NASA Twin Study [4] revealed a significant change, potentially associated with the presence of high linear energy transfer (LET) relativistic particles in space.
While protons are recognized as low-LET particles, high-charge and energy (HZE) particles possess heightened energies and LET values [5]. Despite their low abundance, HZE particles traversing a cell nucleus induce nearly irreparable DNA damage due to a very high rate of energy deposition in living cells [6].
In an e-letter published in Science, Mortazavi et al. expressed concerns about the NASA Twins Study, which examined the biological effects of a year-long spaceflight on a male astronaut compared to his monozygotic twin [7]. The authors of the e-letter suggest that the study did not adequately address the potential impact of space radiation, especially HZE particles, on telomere length and telomerase activity.
They also propose the possibility that telomere elongation during space flight could be an adaptive response to the space environment but might also increase the astronaut's long-term risk of cancer [8]. Additionally, they suggest that the study could provide insights into the differences between low-dose exposures to low- vs. high-LET radiation.
Source:
https://lnkd.in/eR_pVYMg
References
1. doi: 10.1080/09553002.2020.1739770. [PubMed PMID: 32134704]
2. doi: 10.1080/09553002.2019.1605460. [PubMed PMID: 31038377]
3. doi: 10.1371/journal.pone.0008440. [PubMed PMID: 20037654; PubMed PMCID: PMC2793520]
4. doi: 10.1126/science.aau8650. [PubMed PMID: 30975860; PubMed PMCID: PMC7580864]
5. doi: 10.1016/j.heliyon.2019.e02972. [PubMed PMID: 31867459; PubMed PMCID: PMC6906680]
6. doi: 10.1016/j.mrfmmm.2010.11.002. [PubMed PMID: 21126526; PubMed PMCID: PMC3318975]
7. Mortazavi SMJ, Bevelacqua JJ, Welsh. 2019. eLetter. Available from: https://lnkd.in/eS2Ep552.
8. doi: 10.31661/jbpe.v0i0.2005-1115. [PubMed PMID: 33564645; PubMed PMCID: PMC7859374]
How can we acknowledge and provide meaningful support to individuals who have overcome unique challenges to achieve their accomplishments? Additionally, what specific measures can be implemented to ensure that recognition and congratulations are accessible and fair to all, regardless of their background or circumstances? What strategies can be implemented to ensure that recognition and congratulations are inclusive and equitable for everyone?
Take a closer look at #Starliner's NASA - National Aeronautics and Space Administration Commercial Crew launch earlier today atop a United Launch Alliance (ULA) Atlas V rocket.
Starliner is now on its way to the International Space Station with astronauts Butch Wilmore and Suni Williams on board. Soon the spacecraft will dock, the hatches will open, and the International Space Station crew will welcome them to their home on orbit.
Stay tuned for more updates from the #CFT mission.
Albert Johns examines a plug nozzle for the Air Force’s advanced manned strategic aircraft in the 8x6 Supersonic Wind Tunnel at NASA's Lewis Research Center in May 1967. Johns became a renowned expert on inlets and nozzles over his 40-year career and was recognized in 1998 as one of NASA’s Superstars of Modern Aeronautics.
In honor of #BlackHistoryMonth, NASA Glenn is highlighting employees who have contributed at our center throughout the years. More: https://lnkd.in/g7nPCy6V
Note: This post was updated on March 1, 2024, to clarify that the pictured hardware is a plug nozzle, not an inlet.
#BHM#TBT#History#Aeronautics#WindTunnel#NASA
