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#spacecraft

2 posts2 participants0 posts today
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ABC Feeds

Source of Jupiter's mysterious 500-degree heat burst found
By Jacinta Bowler

Scientists say a vast, Earth-sized region of unexpectedly high temperatures in Jupiter's upper atmosphere was caused by a massive wave of solar wind.

abc.net.au/news/science/2025-0

ABC News · Jupiter's mysterious hotspot created by solar wind: studyBy Jacinta Bowler
#PlanetsandAsteroids#ScienceandTechnology#Astronomy
Public
Space Environmentalism

Deloitte on #space: "While growth in the space industry is generally positive, it also poses challenges, which can put #spacecraft at risk. Preservation of the space environment, such as critical earth orbits, is essential to the industry’s growth. As a space sector leader, the United States can have a vital role and ample motivation to lead in sustainable space practices and international cooperative efforts to help preserve the #SpaceEnvironment."

www2.deloitte.com/us/en/insigh

Deloitte InsightsReaping the rewards of the new space raceAmerica, the trailblazer in space technology, must innovate, cooperate, and regulate to safeguard its leadership and drive a prosperous cosmic future.
Public
Dr. John Barentine FRAS

A couple of abstracts relevant to the space environment from the upcoming European Geosciences Union (Vienna, 27 April–2 May 2025):

“Defining the environmental impacts of satellite megaconstellation missions in a rapidly growing space sector” meetingorganizer.copernicus.or

“Survey of the estimated mass of ablated material and intact debris from ‘end-of-life’ LEO spacecraft entering the atmosphere” meetingorganizer.copernicus.or

meetingorganizer.copernicus.orgAbstract EGU25-17301
#Space#Spacecraft#SpaceEnvironment
Replied in thread
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datum (n=1)

@kim_harding "Are satellites bad for the environment?"

Tthe article is right regarding light pollution and carbon cost of ascent, but fails to note Kessler Syndrome / Collisional Cascading, and doesn't say the minimum re-entry pollution.

Satellite re-entry pollution is more impactful than the mass alone would suggest because of (catalytic?) effects of metals in different atmospheric strata where otherwise there's very little of those elements.

"Measurements show that about 10% of the aerosol particles in the stratosphere contain aluminum and other metals that originated from the “burn-up” of satellites and rocket stages during reentry. [...] These measurements have broad implications for the stratosphere and higher altitudes.

The mass of lithium, aluminum, copper, and lead from the reentry of spacecraft was found to exceed the cosmic dust influx of those metals" [1]

[1] pnas.org/doi/10.1073/pnas.2313

Also excellent: earthsky.org/earth/space-vehic

re: pirg.org/edfund/articles/are-s

#satellites#satellite#reentry
Public
Aethelflaed

#Science #Space #Moon #Spacecraft

A Texan company's spacecraft has become the second private craft to land on the moon. Spectacular photos have been sent from the Moon back to Earth. Later this month more photos of the Earth eclipsing the Sun are planned to be taken, whilst here on Earth the Moon will appear to turn a deep red to observers.
futurism.com/firefly-spacecraf

Futurism · American Spacecraft Touches Down on MoonBy Victor Tangermann
Continued thread
Public
Nonilex

The firings at one of the most important US #space #licensing agencies hit at a dire time for a booming US space industry that has long pushed for more nimble & simplified #satellite #regulatory processes…

But sources & individuals across the space industry & US govt…said these #layoffs are likely to trigger major delays in getting #spacecraft approved for #launch.
The #FAA, which signs off on rocket payloads, cannot approve a satellite launch requiring a #NOAA license if it hasn’t obtained it.

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