Green Building Forum - PH in space? Sun, 28 Jun 2026 10:45:57 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 PH in space? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18091&Focus=305361#Comment_305361 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18091&Focus=305361#Comment_305361 Tue, 20 Feb 2024 09:20:00 +0000 fostertom https://www.theguardian.com/science/2024/feb/17/japan-to-launch-worlds-first-wooden-satellite-to-combat-space-pollution

"It is estimated that more than 2,000 spacecraft are likely to be launched annually in coming years, and the aluminium that they are likely to deposit in the upper atmosphere as they burn up on re-entry could soon pose major environmental problems.

Recent research carried out by scientists at the University of British Columbia, Canada, revealed that aluminium from re-entering satellites could cause serious depletion of the ozone layer which protects the Earth from the sun’s ultraviolet radiation and could also affect the amount of sunlight that travels through the atmosphere and reaches the ground.

However, this should not be a problem with satellites built of wood, like LignoSat, which, when it burns up as it re-enters the atmosphere after completing its mission, will produce only a fine spray of ­biodegradable ash."

So - conspiracy conspiracy - are all these mini-sats the backdoor way to 'solve' global heating by geo-engineering the atmosphere with light-reflecting particles?]]> PH in space? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18091&Focus=305376#Comment_305376 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18091&Focus=305376#Comment_305376 Wed, 21 Feb 2024 09:17:04 +0000 cjard
What will make it bio-degrade, I wonder? It's not like it rains up there to wash the ash down - so what does it degrade into and where does it end up?]]> PH in space? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18091&Focus=305379#Comment_305379 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18091&Focus=305379#Comment_305379 Wed, 21 Feb 2024 09:35:35 +0000 fostertom
Posted By: cjardwhat does it degrade into and where does it end up?
Good question - perhaps we should worry about distributing nutrients thro virgin emptiness - organisms are being found, experimentally, that can survive (even thrive, mutate?) in space.]]> PH in space? https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18091&Focus=305384#Comment_305384 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18091&Focus=305384#Comment_305384 Wed, 21 Feb 2024 09:59:55 +0000 cjard